The blue-ringed octopus spends much of its life hiding in crevices.

One of these is the infamous blue-ringed octopus.

The blue-ringed octopus, despite its small size, carries enough venom to kill 26 adult humans within minutes.

The toxin is produced by bacteria within blue-ringed octopuses.

The greater blue-ringed octopus eats mostly crustaceans such as crabs and shrimp.

If the blue-ringed octopus loses an arm, it can regenerate it within six weeks.

Greater blue-ringed octopuses can weigh between 10 and 100 grams depending if the octopus is young or adult.

All octopuses are venomous, but only one group, the blue-ringed octopus, is known to be deadly to humans.

The very venomous blue-ringed octopus becomes bright yellow with blue rings when it is provoked.

The Blue-ringed octopus has distinctive blue rings on its body and on its eight arms.

Blue-ringed octopus bites are often fatal, and the bite of other octopuses can cause unpleasant symptoms.

Blue-ringed octopus females lay only one clutch of about 50 eggs in their lifetimes towards the end of autumn.

No blue-ringed octopus antivenom is available.

There are two types of mollusc that are actively venomous: the cone shells and the blue-ringed octopus.

That is a fully adult and deadly Moluccan Blue-Ringed Octopus!"

And in a few organisms, most notably the blue-ringed octopus, TTX is used to capture prey.

Many octopuses have poison glands, but few are toxic to humans - the bite of the blue-ringed octopuses is the exception.

Bond is seduced by one of Khan's associates, Magda, and notices that she has a blue-ringed octopus tattoo.

This poison can also be found in other animals such as the Blue-Ringed Octopus, cone snails, and even some newts.

Creatures like colorful nudibranchs, anglerfish, shrimp, blue-ringed octopus, and rare pygmy seahorses.

The Blue-ringed octopus (genus Hapalochlaena) is the most venomous octopus.

Greater blue-ringed octopus (Hapalochlaena lunulata)

The blue-ringed octopus pounces on its prey, seizing it with its arms and pulling it towards its mouth.

The mating ritual for the blue-ringed octopus begins when a male approaches a female and begins to caress her with his modified arm, the hectocotylus.

In common with other octopuses, the blue-ringed octopus swims by expelling water from its hyponome (funnel) in a form of jet propulsion.

There are three confirmed species of Hapalochlaena, and a fourth is still being researched:

Blue Ring Octopuses (Hapalochlaena spec.)

Hapalochlaena nierstraszi was described in 1938 from a single specimen from the Bay of Bengal; the validity of this taxon has been questioned.

Blue-ringed octopuses in the genus Hapalochlaena, which live around Australia and New Guinea, bite humans only if severely provoked, but their venom kills 25% of human victims.