How small is the blue-ringed octopus?
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?
These colourful octopus prefer to live in sandy/ mucky areas where they blend in perfectly. They are bottom dwellers not found in open water.
Is the blue-ringed octopus dangerous?
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?
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...
How long do blue-ringed octopus live ?
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...
Some other names for the blue-ringed...
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.