Mantle length is cm. This species is extremely venomous, tetrodotoxin venom produced in the salivary glands has potential to cause human deaths (Ref. Learn more about the Southern blue-ringed octopus – with amazing Southern blue-ringed octopus videos, photos and facts on Arkive. Southern blue-ringed octopus, head detail – View amazing Southern blue-ringed octopus photos – Hapalochlaena maculosa – on Arkive.

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The southern blue-ringed octopus also differs from other marine invertebrates in that there is no planktonic stage.

This is much to the dismay of many toxicologists who feel that people selling and buying them are uninformed of the true danger they pose. An annotated and illustrated catalogue of species of interest to fisheries.

Australian Marine Conservation Society: Whitespotted grouper Epinephelus coeruleopunctatus. Thesis, Prescott College, Arizona.

MyARKive offers the hapxlochlaena feature to signed-up members, allowing you to organize your favourite Arkive images and videos and share them with friends.

Southern blue-ringed octopus

The blue-ringed octopus is a small octopus that ranges in size from 4 mm at birth to up to 20 cm in adulthood. However, members of its genus are sometimes collected for the aquarium trade, despite the risk posed by their venomous bite.

Rodents of Unusual Size. As a result, they have been classified as their own species. The male will then approach her to begin courtship.

This species reaches sexual maturity at just four months old 3 6and may begin laying eggs a month after that.


Team WILD, an elite squadron of science superheroes, needs your help! Hapalochlaena RobsonSpecies: Despite their highly toxic venom, southern blue-ringed octopuses tend to be passive and relatively harmless unless provoked. Help us protect and restore marine life by supporting our various online community-centered marine conservation projects that are effectively sharing the wonders of the ocean with millions each year around the world, raising a balanced awareness of the increasingly troubling and often very complex marine conservation issues that affect marine life and ourselves directly, providing support to marine conservation groups on the frontlines that are making real differences today, and the scientists, teachers and students involved in the marine life sciences.

The blue ringed octopus is a nonaggressive octopus and in general exhibits the typical behaviors of octopuses: North Pacific giant octopus Enteroctopus dofleini. The female southern blue-ringed octopus carries its eggs until they hatch, and dies shortly afterwards.

Your basket is currently empty. This species lacks an ink sac and therefore has become a common addition to the marine aquarium.

These soft-bodied animals often conceal themselves within crevices, seashells or coral rubble for protection 3. It is fatal to humans.

Marine Drugs8: The common name comes from the bright blue rings that appear when they are alarmed.

This is larger by roughly 5 centimeters on average with other varieties of the blue-ringed octopus. Found along the southern coasts of Australia, H. While resting, the background color is a uniform gray to beige, with large, light brown patches or maculae — thus the name H.

Description & Behavior

Share on Facebook Tweet Send email. It pins down and injects it through its beak. Sequence analysis Automatic assertion according to rules i SAM: Economic Importance for Humans: Explicit use of et al.


Hanlon and Messenger Behavior The blue ringed octopus is a nonaggressive octopus and in general exhibits the typical behaviors of octopuses: For this type of octopus, there is approximately a two-month window in which a female acquires and stores sperm from multiple males.

ADW doesn’t cover all species in the world, nor does it include all the latest scientific information about organisms we describe. Mantle In molluscs, a fold of skin that encloses a space known as the mantle cavity, which contains the gills. Southern blue-ringed octopus conservation There are currently no known conservation measures in place for the southern blue-ringed octopus.

NP1 – Hapalochlaena maculosa (Blue-ringed octopus)

Two types of venom secreted by two separate venom glands are used against prey and predators. Ruddy turnstone Arenaria interpres. The mating ritual for blue-ringed octopuses, H. Systems used to automatically annotate proteins with high accuracy:. Because of this, the mother hapalochlaean shortly after the eggs have hatched. Blue-ringed octopuses feed on small crabs, hermit crabs, and shrimp that it hunts during the day.

Like other blue-ringed octopuses, the southern blue-ringed octopus is often sighted in coastal waters at depths of up to 50 metres. AfricachimpanzeeconservationfilmIn the Fieldlab chimpsLiberiaPrimatesprimatologyrehabilitationtrue storywildlifewildlife filmWildscreen Festival.

Typically blue rings cover the dorsal and lateral surfaces of their mantle.