Category: Most Popular

The Colorful World of the Peacock Mantis Shrimp

25/10/2023

If you've never heard of the peacock mantis shrimp, you're in for a real treat! These striking and enigmatic creatures are like the rock stars of the ocean, and they go by the scientific name Odontodactylus scyllarus. Let's dive into their vibrant world and uncover the answers to some of the most burning questions about these incredible marine marvel...
Before we get into the fun facts, let's give credit where it's due: the Latin name. Odontodactylus scyllarus may sound like a mouthful, but when you break it down, it makes sense. "Odontodactylus" translates to "toothed finger," and "scyllarus" is a reference to the Scylla, a sea monster from Greek mythology. So, in a way, the scientific name hints at the mantis shrimp's formidable appendages and its mythical aura.

In the world of marine biology, peacock mantis shrimp are the embodiment of beauty, strength, and mystery. Their striking appearance, lightning-fast strikes, and superhuman vision make them a true wonder of the ocean. The more you learn about them, the more you'll realize that there's never a dull moment in the colorful world of the peacock mantis shrimp.
So, the next time you think of oceanic wonders, don't forget to give these marine rock stars the attention they truly deserve! Whether you're a marine enthusiast or simply curious about the wonders of the seas, the peacock mantis shrimp never fails to captivate and astonish with its kaleidoscope of colours and extraordinary abilities.

4 incredible fun facts about the peacock mantis shrimps!

** Mantis Shrimp Fun Fact #1: The Peacock of the Sea**

The peacock mantis shrimp earns its dazzling nickname due to its vibrant and iridescent coloration. These marine gems come in a range of spectacular shades, including vibrant greens, blues, and fiery reds. Their bodies are adorned with intricate patterns, making them a true art piece.

** Mantis Shrimp Fun Fact #2: Super Smashers of the Ocean**

Peacock mantis shrimp are not just pretty. They are ferocious predators with a pair of specialised front limbs that can strike with the speed of a bullet! Their clubs can deliver blows with the force of a .22 caliber bullet, and they use this power to break open the shells of prey like crabs and snails they love. The mantis shrimp's hunting prowess is so legendary that it's even been known to break aquarium glass. It's not a pet you'd want to mess with!

Curious mantis shrimp in Koh Lanta National Park

Peakock mantis shrimp and amazing coral reef

** Mantis Shrimp Fun Fact #3: Color Vision Extraordinaire**

Mantis shrimp vision is the stuff of science fiction. While we humans have three color receptors, these oceanic superheroes have sixteen! They can see polarized light, ultraviolet, and colors that are beyond our comprehension. This super-vision helps them spot prey, predators, and mates with astonishing clarity.

** Mantis Shrimp Fun Fact #4: Mantis Shrimps are Neither Mantis, nor Shrimp

While the name "mantis shrimp" might suggest a curious fusion of a praying mantis and a shrimp, they're neither related to mantises nor actual shrimp. These captivating creatures belong to the stomatopod family, a group of marine crustaceans that have evolved into a unique and independent branch of the evolutionary tree. So, the next time you're pondering their peculiar moniker, just remember that mantis shrimps are in a league of their own, defying conventional categories in the animal kingdom.

An interesting life cycle

Mantis shrimp have a fascinating life cycle. Fertilized eggs are attached to specialized swimmerets on the female's abdomen using a sticky secretion. The female protects and fans the eggs, ensuring oxygen circulation and preventing the growth of harmful fungi or bacteria during the incubation period, which lasts several weeks.
Once ready to hatch, the female releases the eggs into the water, where they become tiny larvae known as nauplii. These larvae go through multiple developmental stages, feeding on plankton and small organisms until they reach maturity, just like other crustaceans. We can see them very regularily on our blackwater dives. After reaching maturity, they settle on the reef.

Very small larval mantis shrimp on blackwater dive

This alien face is a larval mantis shrimp

This little alien will become a beautiful mantis shrimp

Smasher vs Spearer Mantis Shrimp

The raptorial appendages of the mantis shrimp have different shapes depending on the species. Some have claw-like appendages known as "spearers," while others have appendages that resemble hammers, giving rise to the name "smashers."
The peacock mantis shrimps are "smashers" and are particularly fascinating because they can strike with a force greater than most other animals, despite their relatively small size. It is believed that this incredible punching ability is a result of the mantis shrimp's unique muscle structure, which combines spring-like mechanisms with a locking mechanism to store and release energy rapidly.
Below are a few photos of Spearing Mantis Shrimp (Lysiosquilla maculata). They are much lighter in colour and live in a vertical burrow in the sand, while peacock mantis shrimp prefers rocky areas on the reef.

Mantis shrimp camouflaged on the coral reel

Mantis shrimp well camouflaged in the sand

Now, let's answer some of the most common questions people ask about peacock mantis shrimp:

**1. Can peacock mantis shrimp see more colors than humans?**

Humans have three color receptors (red, green, and blue cones), allowing us to perceive a wide range of colours.
Peacock mantis shrimp have an astonishing sixteen (or more) colour receptors, enabling them to see colours beyond human comprehension, including ultraviolet light and polarized light.
In the underwater realm, the peacock mantis shrimp's eyes are a true anomaly. Their ability to see a rainbow of colors and polarized light sets them apart as one of the ocean's most visually gifted inhabitants. In comparaison, horses or dogs, are called dichromatic, meaning they have two primary color receptors or cones in their eyes. Less than humans and much much less than Mantis Shrimps!

Another great Frank's shot of a peakock mantis shrimp

Supersonic Vision!

Bullet fast punch!

**2. How fast is the peacock mantis shrimp's punch?**

The peacock mantis shrimp has one of the most powerful and fastest punches in the animal kingdom. It possesses specialized appendages called "raptorial appendages" that it uses to strike its prey. These appendages, also known as "smashers," are highly dexterous and possess incredible strength.
When a peacock mantis shrimp strikes, it accelerates its "hammer like appendage" at an astonishing speed of 23 meters per second. This unbelievable speed generates an impressive amount of force, with some estimates suggesting that it can exert up to 1,500 Newtons, which is equivalent to a bullet being fired from a .22 caliber rifle!

**3. Are peacock mantis shrimp dangerous to humans?**

While their punch can shatter shells and glass, mantis shrimps aren't a threat to humans. However, it's wise not to bring your fingers too close to their powerful hammers!!!

**4. How do peacock mantis shrimp communicate with each other?**

These mantis shrimp often use a combination of visual signals and body language for communication. They display various color patterns and postures to convey information about their intentions, such as territorial disputes or courtship rituals.

**5. What are some interesting behaviors of peacock mantis shrimp?**

Peacock mantis shrimp are known for their meticulous burrowing behavior. They construct intricate burrows with multiple chambers, which serve as both protection and a place to ambush unsuspecting prey. They are also quite territorial and will fiercely defend their burrows.

**6. Can peacock mantis shrimp regenerate their limbs?**

Yes, peacock mantis shrimp have a remarkable ability to regenerate their limbs if they get injured or lose one during battles or accidents. Their powerful resilience is another testament to their extraordinary adaptations.

**7. Where can you find peacock mantis shrimp in the wild?**

Peacock mantis shrimp inhabit the warm waters of the Indian and Pacific Oceans, particularly in the tropical coral reefs. You can often spot them in rocky crevices and burrows along the seafloor. While amazing and incredible creatures, Mantis shrimps are not rare in our dives and and our guides see them on every single one of our Andaman Sea adventures.

Wanna know more about the Marine Life of the Andaman Sea? Check out this page for reference!

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10 Remarkable ways Scuba Diving Can Transform Your Life!

18/10/2023

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Diving isn't just Fun! It's Good for you!!!

"Ever dreamt of embracing your inner James Bond or conquering personal challenges? Scuba diving offers you all this excitement and more! If you've been contemplating taking the plunge and are curious about the incredible ways it can enrich your life, keep reading!"

DIVING IS GOOD FOR YOU!

Ghost pipefish, seafan and soft coral

1. Dive into an Alien World

Our oceans, which encompass 70% of our beautiful blue planet, are a gateway to an entirely different universe waiting to be explored. This underwater realm mirrors the diversity of life on our planet, with its own unique set of rules and inhabitants. The best part? You don't need a rocket ship to embark on this thrilling journey. Just grab your scuba gear and meet unbelievable alien-like creatures!"

Funny textures, transparency, glitters, bioluminescence...

So many interesting shapes and colours...

Incredible patterns...

2. Dive into a world of Tranquility: The World of silence is the perfect break from the everyday hustle

2. Dive into Tranquility: A Break from the Everyday HustleScuba diving offers a unique escape from the hustle and bustle of everyday life. Beneath the waves, you're in a world where you can't chat on your phone, respond to emails, tend to daily chores, or get caught up in the usual adult responsibilities. It's your opportunity to disconnect, unwind, and simply breathe in peaceful serenity!

Enjoy the world of silence

... enjoy the feeling of weightlessness that melt all stress away...

3. Dive into a World of New Skills (Including Levitation!)

During your scuba diving journey, you'll acquire some seriously cool super powers, but perhaps the coolest is mastering weightlessness. Using only your breath, you'll experience the sensation of being suspended by invisible threads, floating in a gravity-defying dance like an astronaut, all without leaving our beautiful Earth!

Just like Astronauts, become a levitating explorer!

Learn new skills!

Divers have super-powers!

4. Dive into a Confidence Boosting world!

Scuba diving pushes your limits and equips you with the ability to handle various situations with poise and calmness. These newfound skills will accompany you back to the surface, bolstering your self-confidence.
"Breath, think, act" will help you solve so many problems both above and below the waves and is a recipe to melt stress away!

Breath, Think, Act...

... & problems melt away...

5. Dive into the Diving Community: a Not-So-Secret (bit oh-so-cool) Society

When you become a diver, you become part of a vast, global community that transcends age, nationality, sexual orientation, social backgrounds, and lifestyles. It's an incredible way to connect with people who are different yet bound by a shared passion. Dive in and expand your horizons!

Even baby divers...

Are happy divers!

6. Dive into Happines: Diving is the best Therapy!

Ask any diver, and they'll vouch for the therapeutic magic of diving. Even if you start a dive in a sour mood, chances are you'll resurface feeling more relaxed, happier, and chattier. The combination of mindful breathing, escaping the daily noise (see above), immersing yourself in natural wonders, and bonding with fellow divers is a surefire recipe for boosting your mood and serotonin levels.

SO HAPPY!

Try dive therapy... IT WORKS!!!!

7. Dive into Fitness Effortlessly

If the thought of hitting the gym, jogging, or any form of strenuous exercise makes you cringe, scuba diving is your kind of activity! (more on this on this blogpost!) While the diving philosophy often encourages conserving energy to maximize air consumption and enhance the diving experience, scuba still burns calories and offers a heart-healthy workout. Plus, lugging around those tanks might even give you some unexpected biceps!

And we expand! And we relax!

Effortlessly! □

8. Dive into Knowledge: The Ultimate Conversation Starter (become a Marine Life Geek

Prepare to amaze your friends at dinner parties with quirky and fascinating facts about the underwater world. From the incredible strength of mantis shrimps to the bizarre mating rituals of nudibranchs, you'll have a treasure trove of captivating tales to share. If you like fun facts about Marine life, don't miss out on this blogpost...

Nudibranch Pikachu... Don't catch it!

Mantis shrimp

9. Dive into Thrills and Chills

For adrenaline junkies, scuba diving offers a world of excitement. Whether it's battling a strong current, meeting a big nurse sharks sleeping in a tunnel, or exploring the mesmerizing glow of bioluminescent creatures during a blackwater dive, scuba can deliver heart-pounding thrills alongside its calming moments.

Dive with sharks is so exciting!

Time to strike a pose and marvel...

10. Dive into the best addiction ever! Dive, Travel, Repeat!

Warning: Diving is highly addictive! Once you catch the diving bug, you'll find yourself scouring the globe for new destinations based on their dive sites. Your quest for the next scuba adventure will lead you to uncharted islands and hidden archipelagos, all in pursuit of those unforgettable underwater moments. Get ready to fall in love with every minute of your aquatic explorations!

No better addiction than Scuba Diving!

Dive, travel, repeat...

Did you like this blogpost? Be sure to leave us a comment below and tell us how Scuba has changed your life...
A few articles that might interest you here: Most popular

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Discover the Enigmatic Sea Snakes: Fascinating Creatures of the Ocean

2/7/2023

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Discover the Enigmatic Sea Snakes: Fascinating Creatures of the Ocean

The vast oceans are home to a multitude of captivating and unique creatures, and among them are the enigmatic sea snakes. These serpentine reptiles have adapted to life in marine environments and are renowned for their remarkable features. In this blog post, we will delve into the intriguing world of sea snakes and explore their fascinating characteristics.

Sea snakes belong to two subfamilies, Hydrophiinae (true sea snakes) and Laticaudinae (sea krait, who are semiaquatic).

In Thailand and Myanmar we have the chance to encounter regularly representatives of these two families:

The yellow-bellied sea snake (Hydrophis platurus) is a true marine snake (hydrophiinae family) who leaves a pelagic life and never goes on land! We have only encountered this snake during our blackwater dive, offshore, never on the reef.

Yellow-bellied sea snake

The banded sea krait (Laticauda colubrina), on the other hand, belong to the Laticaudinae family. They are semi-aquatic with feature adapted to a life between land and the ocean. These are the sea snakes we most often see while diving on the reef.

The banded sea krait (Laticauda colubrina)

Diversity and Distribution

Sea krait on the coral reef

True sea snakes comprise as many as 53 species whilst the partially terrestrial Laticauda or sea kraits comprise five species only.

Both can be found in the warm waters of the Indian and Pacific Oceans, particularly in regions such as the Coral Triangle, the Andaman Sea, and the Great Barrier Reef.

Curiously, they are not found in the Red Sea, Atlantic Ocean, or Caribbean Sea. Their distribution ranges from coastal shallows to deeper offshore waters, and they exhibit various ecological adaptations to their preferred habitats.

Both true sea snakes and sea kraits inhabit the sea, but sea kraits can also be observed on land while true sea kraits are true pelagic.

Both sea snakes and Sea kraits feature a flattened tail that help them swim, but Sea kraits' bodies are cylindrical enabling them to crawl on land, while sea snakes are ribbon like bodies making them even stronger swimmers.

On average, adult sea snakes (including sea kraits) measure between 1 and 1.5 meter in length.

Can Sea Snakes breath underwater

We recently came across another really cool "true sea snake" on a blackwater dive in Myanmar, a Slender-Necked Sea Snake (possibly Hydrophis nigrocinctus). Like other true Sea Snake, it is a highly adapted aquatic species, spending most of its life in the ocean.

This species, found in tropical waters of the Indian Ocean near Southeast Asia and northern Australia, remains mysterious due to its elusive nature and vast habitat.

Despite being known to science, much about its distribution and behaviour remains unknown, making it a compelling subject for further research. Studying it could reveal valuable insights into its biology, behavior, and interactions with other marine species.

Snakes, much like turtles are reptiles not fish, they must periodically swim to the water's surface to replenish their oxygen supply before descending back to the depths of the reef.

While many sea snakes (including sea kraits) need to resurface every half an hour to breathe, certain species of sea snakes (including the yellow-bellied sea snake) possess an extraordinary ability to remain submerged for up to eight hours.

This superpower is made possible by their unique capability to absorb approximately 33% of their required oxygen and eliminate around 90% of carbon dioxide through their skin. The nostrils of a true sea snake (positioned on top of their snout) have the ability to close when the animal is underwater.

Can sea snakes die of thirst

Yes! while surrounded by (sea) water, Sea snakes can die of thirst.
While they live in the oceans, sea snakes cannot extract fresh water from the saline sea. Kraits may drink water from land or the sea surface, but True sea snakes (while they have teh ability to expel part of the salt they ingest) must wait for rain to drink the relatively fresh water floating on the sea's surface.

Are sea snakes venomous or poisonous?

Banded sea krait portrait

Sea snakes are extremely venomous creatures (their bite will create quite a lot of damage), however, they are not considered aggressive towards humans and will only bite if they feel threatened or provoked.

It's important to maintain a respectful distance and avoid handling or disturbing these fascinating creatures if encountered in their natural habitat. The same apply to all underwater creatures: Do not touch!
The same caution should be exercised with snakes found washed up on beaches. Snakes may feign death as a defense mechanism, and even a deceased or decapitated snake can still reflexively bite.

Survival tip: In the event of being stranded at sea, it is possible to consume sea snakes for sustenance. They are not poisonous (ie: can be eaten) but to survive, you better avoid getting bitten!

Diet and predation for sea snake

Banded sea krait on the reef

True sea snakes are skilled predators that primarily consume small fish, fish eggs, and young octopuses. These sea snakes can be active either during the day or at night, displaying versatility in their feeding habits. On the other hand, sea kraits are nocturnal feeders that primarily target eels as their preferred prey. They supplement their diet with crabs, squid, and fish they find while exploring the reef and crevices.

While there have been no observations of sea kraits feeding on land, we know that they do return to land to facilitate the digestion of their prey.
In their natural habitat, sea snakes face predation from eels, sharks, rays and other large fish.

Reproduction and Life Cycle of sea snakes and sea kraits:

Reptiles (including sea snakes) reproduce by laying eggs, but there are two distinct methods of hatching: viviparity and oviparous.

Oviparity is the most common method of reptile reproduction, and it is observed in species like sea kraits (and turtles). Oviparous reptiles lay eggs externally, usually in a safe location where the eggs can develop. The mother does not provide direct nourishment to the developing embryos; instead, the eggs contain a yolk sac that provides the necessary nutrients for their growth.

The banded Sea krait (much like turtles) usually returns to the same beach it was born on to lay its own clutches of up to 10 eggs.
These eggs are then left to fend for themselves and rely on environmental conditions, such as temperature and humidity, for proper incubation. Once the embryos have fully developed within the eggs, they hatch, and the young reptiles emerge.

Viviparity is a reproductive strategy seen in other reptiles, such as yellow-bellied sea snakes. In viviparous species, the embryo develops inside the mother's body and receives nourishment directly from her through a specialized structure, such as a placenta or yolk sac. The mother provides a nurturing environment for the embryos, supplying them with nutrients and protecting them until they are ready to be born as fully developed offspring. This method allows for internal development and live birth, similar to some mammalian species. This adaptation allows the newborn snakes to feed on its very first day and give them a higher chance of survival in the open ocean.

Yellow-bellied sea snake on the blackwater dives

yellow bellied sea snake -Hydrophis platurus

In summary, while reptiles, including sea snakes, generally lay eggs, they employ different methods of hatching. Viviparous species, like yellow-bellied sea snakes, give birth to live young after internal development and maternal nourishment. Oviparous species, such as sea kraits, lay eggs externally, and the embryos develop inside the eggs with nutrients from the yolk sac until they hatch independently.

Conservation and Threat

Like many marine species, sea snakes and kraits face various threats due to human activities and habitat degradation. Pollution, overfishing, and habitat destruction pose significant challenges to their survival. Some species are also at risk from accidental bycatch in fishing nets. It is crucial to raise awareness and take steps to protect these remarkable creatures and their delicate ecosystems.

Sea Snakes superpowers

Sea snakes possess some truly fascinating superpowers! Just like their land-dwelling relatives, they use their tongues to gather vital information about their surroundings. But here's the cool part: sea snake tongues are actually shorter than those of regular snakes. Why, you ask?

Sea snake swimming in the blue

Well, it turns out that it's much easier for them to "taste" molecules in the water than in the air. Talk about a handy adaptation!

But wait, there's more! Sea snakes have a nifty trick up their scaly sleeves when it comes to dealing with salt. Since they ingest salt along with their prey, these clever creatures have special sublingual glands located beneath their tongues. These glands work like magic, allowing the sea snake to remove excess salt from its blood and expel it with a flick of the tongue. It's like having a built-in salt filter – pretty impressive, right?

Now, when it comes to sea snake vision, scientists are still unraveling the mysteries. While it seems that their vision plays a limited role in hunting and finding mates, sea snakes have other extraordinary sensory abilities. They possess special mechanoreceptors that help them sense vibrations and movement, giving them a heightened awareness of their aquatic surroundings. Some sea snakes even respond to pheromones to identify potential mates.

But hold on tight, because the superpowers of sea snakes don't stop there. These incredible creatures may have the ability to detect electromagnetic fields and pressure, although the exact cells responsible for these senses are still a mystery to scientists.

Imagine having a sixth sense that lets you perceive things beyond what meets the eye! Sea snakes truly embody the wonders of the underwater world, showcasing a range of remarkable abilities that make them stand out in the snake kingdom.

Look at this incredible video!

Brace yourselves for an extraordinary journey into the depths of the ocean aboard The MV Smiling Seahorse. Get ready to embark on an awe-inspiring underwater adventure where you'll have the chance to encounter an array of remarkable marine life, including these superstars of the sea: sea snakes!

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Celebrating World Ocean Day: Every Little Help Counts!

8/6/2023

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Camille Fogarolo, Ocean lover and owner of the Smiling Seahorse, a reef responsible Liveaboard

Introduction:
The world's oceans are a magnificent gift that nourishes life in countless ways. They provide us with food, oxygen, and breathtaking beauty. Unfortunately, they are also under threat from pollution and human activities. On the occasion of World Ocean Day, a group of dedicated individuals came together to make a difference. We embarked on an ocean clean-up adventure, focusing on Kata Beach and its nearby reefs. At the occasion of World Ocean day, let's talk about the importance of these clean-ups and how every small effort can contribute to the preservation of our precious marine ecosystems.

Cute pufferfish on the coral reef

Preserving Fragile Reef Ecosystems:
Coral reefs are among the most diverse and vibrant ecosystems on the planet, supporting a vast array of marine life. These underwater wonderlands are not only visually stunning but also crucial for coastal protection, as they act as natural barriers against storms and erosion. However, reefs are facing severe threats from pollution, overfishing, and climate change. Engaging in reef clean-ups helps remove harmful debris and waste, reducing the risk of entanglement or ingestion for marine species and allowing the reefs to flourish.

Debris and waste are harmful for the ocean and his inhabitants

Protecting Pristine Beaches:
Beaches are the gateway to the ocean, where many people experience their first connection with the marine environment. Clean beaches not only provide a safe and enjoyable experience for visitors, but also play a vital role in supporting coastal ecosystems. By participating in beach clean-ups, we prevent harmful substances from entering the ocean, safeguarding the habitat for shorebirds, turtles, and countless other marine creatures. It also helps maintain the natural beauty that attracts tourists and supports local economies.

Beaches are the gateway to the ocean, where many people experience their first connection with the marine environment.

Phuket Kata Beach

Ripple Effects of Individual Actions:
It's easy to underestimate the impact of our individual actions, but they can create powerful ripples of change. Participating in local clean-up initiatives may seem small, but it raises awareness and inspires others to take action. Every piece of trash picked up is one less item harming our oceans. By spreading the word about the importance of reef and beach clean-ups, we can mobilize communities, governments, and businesses to adopt more sustainable practices, leading to long-term positive change.

Clean-ups are not just about removing existing pollution; they are about changing behaviors and preventing future harm.

Great team! Great feeling! Ready for action!

Encouraging Sustainable Practices:
Clean-ups are not just about removing existing pollution; they are about changing behaviors and preventing future harm. By engaging in these activities, we highlight the need for responsible waste management, recycling, and reducing single-use plastic consumption. Through education and community involvement, we can inspire people to make conscious choices in their daily lives, minimizing their impact on the oceans and the planet as a whole.

The result of our brave cleaners

Conclusion:
World Ocean Day serves as a powerful reminder that our actions today shape the future of our oceans. Reef and beach clean-ups are essential steps toward preserving these fragile ecosystems, and every small contribution counts. By coming together and taking responsibility for our actions, we can create a positive impact on a global scale. Let us embrace the power of collective action, encouraging sustainable practices and nurturing a deep appreciation for the beauty and importance of our oceans. Remember, every little help can make a significant difference in safeguarding our reefs and beaches for generations to come.

And you? What have you done today to celebrate World Ocean day?

And you? What have you done today to celebrate World Ocean day?

Yes!!!! Feeling so great!

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22nd to 29th of October 2022: Second trip of the season | north Andaman liveaboard

4/11/2022

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We had the pleasure to dive with Subaqua Club de Chartres

22nd to 29th of October 2022: Second trip of the season | north Andaman liveaboard

What an amazing trip with this group of 16 French divers all super fun to have around!

Divers from Subaqua Chartres Club

After the rainy week we had last trip, it was a amazing having perfect conditions, both below and above water! Flat sea, warm water, excellent visibility and almost no rain.

Beautiful Sea fan from the Surin Islands

We started this trip from Ranong and were diving around Surin island on the first day. We had some current and could drift gently surrounded by thousands of fishes ! Some even managed to find the colourful Pikachu Nudibranchia!

Pikachu Nudibranchia

The second day was around Koh Tachai and Koh Bon, we love both pinnacles that were full of life!
We continued down South for the third day around the Similans Island and their beautiful granite boulder formations. The star here was a Yellow Warty frogfish (quite rare around here) but the magnificent ribbon eels at Elephant Head Rock was a close second!

Because of the rough condition last week, this trip saw the very first Blackwater Dive of the season and it was also a first for all our dear guests.

Lionfish hovering over the coral reef

Time to cruise back north, with the morning dives in the north of the Similan islands, then two more at Koh Bon, not far from which our guests asked for a second Blackwater Dive! Your wish is my command :) We just love making you happy!

Pearlfish Blackwater dive

Unidentified Shrimp Blackwater dive

Pelagic snail Blackwater dive

Flounder Larval Blackwater dive

In Koh Tachai pinnacle we swam in the middle of a huge school of barracuda, than with an enormous green turtle followed by a black tip reef shark.

School of Barracuda Koh Tachai pinnacle

Yellow Warty Frogfish

Last dive site but not the least, the famous Richelieu Rock in its purple soft coral costume, thousands of jack fishes hunted around to feed on the cloud of glassfish.
We were happy to find the usual suspect: seahorse, ghost pipe fish and another ribbon eel hidden under the blanket made from the millions of glass fish.

Pygmy Squid

We also welcomed back a dear friend and fantastic dive guide: Julien, who’s finally back after 2 years of adventurous trip sailing on the Atlantic Ocean who is just as delighted to be back in The Smiling Seahorse Family!

Octopus Richelieu Rock

Ribbon Eel Richelieu Rock

Congratulations to Roro and David for your 100’ dives and Stephanie for your 300’ !

Thanks again to Subaqua Chartres Club for joining us on this amazing trip. We are looking forward to diving with you again very soon!

Moray Eel Richelieu Rock

Beautiful soft coral

"Love is in the air"

Mantis Shrimp

Ornate Ghostpipe fish Richelieu Rock

Seahorse Richelieu Rock

Subaqua Chartres divers

Sunset onboard MV The Smiling Seahorse

Part of the group decided to continue in Khao Sok National park so we organised for them a little adventure! They even spent a night in a hammock with integrated mosquito net on a remote island of the lake from where they could spot interesting wildlife! Thanks for sharing these lovely photos!

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The blue ringed octopus, small but not defenseless

30/9/2022

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The blue ringed octopus, small but not defenseless

How small is the blue-ringed octopus?

Does size really matter ? ...
Weighting 26g for about 10cm, the blue ring octopus can easily kill a horse with a drop of its venom!

Where can you find blue-ringed octopus?

Most often sighted in Australia, Indonesia, and the Indo-pacific Ocean, Solomon Islands, Philippines and Vanuatu the blue ring octopus is also regularly spotted on some well kept secret muck dives in Thailand !
These colourful octopus prefer to live in sandy/ mucky areas where they blend in perfectly. They are bottom dwellers not found in open water.

The blue-ringed octopus is said to hold two types of venom in its saliva

Is the blue-ringed octopus dangerous?

This shy little octopus is among the deadliest animals on our planet!
That being said "small dogs tend to bite more than big dogs because they need to impress"...
And because the blue ring octopus doesn't have anything to prove... it is also not the attacking type.

This mighty little octopus is said to hold two types of venom in its saliva, both carry enough punch to kill 26 adults, within a few minutes.

The blue-ringed octopus is not agressive, they will not attack humans willingly and prefer to avoid them. A few bites happen every year globally on humans who stepped on one unknowingly, but surprisingly, there have been very few report ever of a deadly bite.

Only 3 death-by-blue-ring-octopus-bite have ever been reported, the other people who got bit experienced progressive muscular weakness leading to difficulty breathing/ swallowing. There is currently no antidote available for this venom however it is temporary and muscles will usually start working again after about 15 hours.

If you think a wetsuit can protect you, remember that octopus' beak is hard and sharp and can easily penetrate through a wetsuit... so please let them be!!!

What is the daily diet of a blue ringed octopus?

Like all other cephalopods, they love Live Seafood!
Blue ring octopus are carnivorous, their favorite meal consists of small crabs, mollusks, other crustaceans. They usually wait until their venom paralyse their prey completely before eating them alive !

And what predators can eat blue ring octopus?

While its soft tissues are extremely poisonous to humans, Murray eels seem immune to it and are the main predator for blue ring octopus but seals, dolphins and whales can also enjoy this exotic treat!

What is there to say about Blue Ring octopus reproduction?

BRO can give birth to up to 100 tiny blue-ringed pup per litter. Just like other octopi, blue-ringed are semelparous creatures, which implies they give birth only once in their lifetime. After a female octopus lays a litter of eggs, she stops hunting to look over her eggs and dies of starvation before they even hatch. 😕😭
Something quite funny about their mating behaviour is that blue-ringed-octopus can't tell a male from a female before starting a sexual act. When two males start to "copulate" it lasts about 30 seconds and no "semen" is released, while when the couple is male-female it may last 160 minutes and spermatophores are exchange. Basically it means that before inserting his attribute (hectocotylus), the male cannot determine the sex of its partner...

the blue-ringed octopus only live about 2 years

After a female octopus lays a litter of eggs, she stops hunting to look over her eggs and dies of starvation before they hatch

How long do blue-ringed octopus live ?

Growing up from the size of your fingernail to the size of a chicken egg, the blue-ringed octopus only live about 2 years, this is the time it takes them to be sexually mature, find a mate and give birth to their first and last offsprings.
It is believed that Octopus are extremely intelligent creatures who could achieve so much more if they lived a little longer to learn from experience and if they could learn from their parents instead of starting alone from scratch...

Blue-ringed octopus close up by Franck Fogarolo

Some other names for the blue-ringed...

Divers affectionally call him BRO but there are actually 4 kinds of blue-rigged octopus in the books:
Greater blue-ringed octopus - Hapalochlaena lunulata (who has the largest rings)
Lesser blue-ringed octopus - Hapalochlaena maculosa (aka Southern Blue-Ringed Octopus)
Hapalochochlaena fasciata and Hapalochochlaena nierstraszi.

Learn more about Cephalopods in this blogpost

The Andaman sea is home to many cephalopods such as octopus, squid and cuttlefish... making them pretty much a guaranteed sighting! Divers are often amazed by the Cephalopods super power of invisibility. Here is a little list of the Cephalopds we most often see around the Andaman Sea...

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Why you should dive Nitrox on your next liveaboard?

23/4/2022

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Why you should dive Nitrox on your next liveaboard?

What’s the difference between air and Nitrox?

The air we breathe everyday is as a gas made of 21% oxygen, 78 nitrogen and 1% other gas.
Nitrox, also called enriched air, is a mix of the same gaz but in a different proportion, we enrich the air with extra oxygen so the oxygen proportion is bigger. Its name: Nitrox comes from the combination of Nitrogen and Oxygen.
We refer to Nitrox according to its oxygen percentage, for example a Nitrox 32 contains 32% oxygen and is the most commonly used.

What are the advantages of using Nitrox?

If you remember your Open Water theory class, the amount of nitrogen entering your tissues is what limits the time you can spend at a certain depth.
The more nitrogen in the body, the more we risk a decompression sickness. Using Nitrox allows the diver to have less nitrogen in his blood within a given diving time, which gives Nitrox divers many advantages:

The ability to stay longer at a certain depth before reaching the same nitrogen blood level.
For example, if you dive at 30 meters, you could spend about 20 minutes on air before a decompression stop becomes compulsory, 30 minutes with a nitrox 32 and 40 minutes with a nitrox 36!
Having less nitrogen in your body also means your surface intervals could be shorter (which is a big advantage in some situation when you want to squeeze in 2 dives in a limited time).

I’m planning to dive with my friend who dives one air, what’s the point diving nitrox? Even if you follow the same dive profile as air divers, you will be far less tired then if you were diving on air and far safer as you will be further away from a risk of decompression sickness.
The nitrogen tissues desaturation is what tires you so much after a long dive. The less you have nitrogen in your blood, the less tired you will fill.

What are the disadvantages of using Nitrox?

The “depth level” notion is the main disadvantage of Nitrox: the less nitrogen in your nitrox, the more oxygen you breathe. Oxygen becomes toxic with depth and it is important not to exceed a certain partial pressure or you risk in water-convulsions (which may lead to drowning!) These events are extremely rare and easily avoidable if you follow the brief. Nitrox is safer than air if used within its limits.

Can I dive deeper with Nitrox?

It is generally believed that Nitrox is used for very deep dives, but the reality is that it is a gas allowing longer diving time in mid-deep waters, perfect for recreational dives between 20 and 30 meters deep.
The only thing you need to know to dive using Nitrox is that beyond a specific depth, the oxygen becomes toxic. Nitrox being rich in oxygen, it becomes dangerously toxic, faster (less deep) than normal air.
But don’t get scared, after your course, you will know very well what will be your maximum depth on any given nitrox mix and plan your dive accordingly to stay safe!

Can I dive longer with Nitrox?

Nitrox will make your NDL (no deco limit) time longer but if you breath through your gas fast, you will still need to ascend before being “out of air”. So it will make your dive longer only if you are good with air consumption. While Nitrox has many advantages, reducing your breathing rate isn’t one of them and you should not see any noticeable change on your air consumption when switching to Nitrox.

Where can we dive with Nitrox?

Nitrox is used everywhere in the world, and it becomes really advantageous when doing multiple dives a day such as on dive cruises.

Do I need another certification to dive nitrox?

Yes! Because of the danger associated with diving nitrox, which are different from the dangers of diving with air (which you have learned during your open water course), you will need to learn a few more things to dive safely with Nitrox.
The Nitrox course is the most taught speciality in the diving industry, not only it is the easiest and quickest diving course, it can be done without even getting wet.
On the MV Smiling Seahorse, we teach Padi Enriched Air Nitrox for 6000 THB. It can be easily done onboard in a few hours but can also be done online before coming through PADI e-learning. Don’t hesitate to get in touch if you have any questions!

Want to reed more fishy stories? Check our most popular blogpost!

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The Colorful World of the Peacock Mantis Shrimp

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​Now, let's answer some of the most common questions people ask about peacock mantis shrimp:

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The blue ringed octopus, small but not defenseless

How small is the blue-ringed octopus?

Where can you find blue-ringed octopus?

Is the blue-ringed octopus dangerous?

What is the daily diet of a blue ringed octopus?

And what predators can eat blue ring octopus?

What is there to say about Blue Ring octopus reproduction?

How long do blue-ringed octopus live ?

Some other names for the blue-ringed...

Why you should dive Nitrox on your next liveaboard?

What’s the difference between air and Nitrox?

What are the advantages of using Nitrox?

What are the disadvantages of using Nitrox?

Can I dive deeper with Nitrox?

Can I dive longer with Nitrox?

Where can we dive with Nitrox?

Do I need another certification to dive nitrox?

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Now, let's answer some of the most common questions people ask about peacock mantis shrimp:

1. Dive into an Alien World

2. Dive into a world of Tranquility: The World of silence is the perfect break from the everyday hustle

4. Dive into a Confidence Boosting world!

9. Dive into Thrills and Chills

Are sea snakes venomous or poisonous?