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The octopus also has characteristic blue lines running through its eyes. Distribution and habitat. The greater blue-ringed octopus is widespread throughout the tropical and subtropical waters of the Indo-West Pacific, from Sri Lanka to the Philippines and from Australia to Papua New Guinea, the Solomon Islands and Vanuatu.


The greater blue-ringed octopus is one of several species of blue-ringed octopuses. All are thought to be venomous and for their size, they are the most deadly of all cephalopods. It is said that the venom of this octopus could kill 26 adults in just a few minutes. There is no antivenin for treatment. Fortunately, these octopuses do not attack ...


Greater blue-ringed octopus (Hapalochlaena lunulata) Southern blue-ringed octopus or lesser blue-ringed octopus (Hapalochlaena maculosa) Blue-lined octopus (Hapalochlaena fasciata) Hapalochlaena nierstraszi was described in 1938 from a single specimen from the Bay of Bengal, with a second specimen caught and described in 2013.


The greater blue-ringed octopus is despite its vernacular name a small octopus whose size does not exceed 10 centimeters, arms included, for an average weight of 80 grams. Its common name comes from the relatively large size of its blue ring (7 to 8 millimeters in diameter), so they are indeed larger than those of the other members of the genus ...


Don’t forget to read all these essential blue ringed octopus facts such as blue ringed octopus diet, habitat, reproduction, and classification. Even with its small size, the blue tinged octopus is one of the deadliest creatures. The worst thing is that the victim does not feel any pain of its bite but effects are certainly speedy and sometimes fatal.


The greater blue-ringed octopus is one of the most infamous sea animals that our planet has to offer. It is the biggest species of the genus Hapalochlaena, more commonly known as blue-ringed octopuses. The one distinctive feature that makes the blue-ringed octopuses so deadly, is their toxicity.


Greater Blue-ringed Octopus (Hapalochlaena lunulata): Found in the tropical waters of the Pacific Ocean that can weigh between 10 and 100 grams. Southern Blue-ringed Octopus or ‘lesser blue-ringed octopus’ (Hapalochlaena maculosa): Found along the southern coast of Australia, they grow up to 20 cm and on an average can weigh around 26 grams ...


In the greater blue-ringed octopus (Hapalochlaena lunulata), the rings contain multi-layer light reflectors called iridophores. These are arranged to reflect blue–green light in a wide viewing direction. Beneath and around each ring there are dark pigmented chromatophores which can be expanded within 1 second to enhance the contrast of the rings.


The blue-ringed octopus is a highly venomous marine animal. Symptoms of a blue-ringed octopus bite are pain, nausea, vomiting, bleeding, problems breathing, and changes in vision.


» When at rest, the octopus is light gray to beige having light brown circular blobs or patches. The octopus derives its common name from the iridescent blue color that appears on its rings when it is flustered. The base colors of the individual species are given as follows: The Greater blue-ringed octopus - dark brown to gray