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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 male will then use the hectocotylus, a modified arm consisting of a groove between the suckers and ending in a spoonlike tip, to deposit the sperm in the female’s oviduct, which is located under the mantle.

Description & Behavior

To date there is no antitoxin. Cephalopod Life Cycles v. Burrowing is where an octopus establishes a den or refuge for itself by excavation of sand, mud, gravel, and coral rubble. Help us share the wonders of the natural world. So why should you NOT buy a blue-ringed octopus? The Animal Diversity Web is an educational resource written largely by and for college students.

Generally though, humans are not considered prey to this creature and a bite from one seems to be more of a defensive response than anything else.

Particularly common after storms when it can be found looking for crabs and bivalves. The average life span of a southern blue ringed octopus is around seven months.

Hapalochlaena maculosa : Southern Blue-Ringed Octopus | Atlas of Living Australia

This species information was authored as part of the Arkive and Universities Scheme. We greatly appreciate all feedback! Your basket is currently empty.


Image credit Link to this image Add to scrapbook How you can use this image. The prey of H.

Toxicologists strongly disagree with this practice because of the potential danger to people who are unaware of the potentially fatal venom. This information is awaiting authentication by a species ahpalochlaena, and will be updated as soon as possible. Hapalochlaena maculosa Hoyle, accepted. Articles with ‘species’ microformats All articles with unsourced statements Articles with unsourced statements from May Aposematism, or advertising toxicity, in this species includes the “glowing” Campbell of the iridescent blue rings, and often a yellow and black striping of hapalochpaena body.

Southern blue-ringed octopus

However, members of its genus are sometimes collected for the aquarium trade, despite the risk posed by their venomous bite.

The female will initiate reproduction by specific coloring and posturing.

The same study also found that males would spend less time mating with females that they had already mated with. The southern blue-ringed octopus may also consume small fish 2 3. Their blue rings appear with greater intensity when they become aggravated or threatened. Blue-ringed octopuses feed on small crabs, hermit crabs, and shrimp that it hunts during the day.

MyARKive offers the scrapbook feature to signed-up members, allowing you to organize your favourite Arkive images and videos and share them with friends. While resting, the background color is a uniform gray to beige, with large, light brown patches or maculae — thus the name H. As a result, they have been classified as their own species.

Like other blue-ringed octopuses, the southern blue-ringed octopus is often sighted in coastal waters at depths of up to 50 metres. All eight arms are marked with approximately 10 evenly spaced brown patches that form bands running down their arms. The ADW Team gratefully acknowledges their support.


Like other cephalopodsthe southern blue-ringed octopus is considered to be one of the most intelligent of all invertebrates 2 8.

ADW: Hapalochlaena maculosa: INFORMATION

Database of comparative protein structure models More The blue-ringed octopus is about the size of a pea when hatched then grows to reach the size of a golf ball as an adult. Gland An organ that makes and secretes substances used by the body. This species reaches sexual maturity at just four months old 3 6and may begin laying eggs a month after that. Little information is available on the potential threats to the southern blue-ringed octopus.

Smaller patches hapalochlaenz their web and base of their arms. This may provide the toxin into its bloodstream. Lophogastrida, Stygiomysida and Mysida Help Protect and Restore Ocean Life Help us protect and restore marine life by supporting our hapaochlaena 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 hapalcohlaena groups on the frontlines that hapalovhlaena making real differences today, and the scientists, teachers and students involved in the marine life sciences.

Views Read Edit View history. The mantle is responsible for the secretion of the shell.