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Blue ringed octopus bite2/24/2023 ![]() ![]() These flashes are achieved by using muscles which are under neural control. They can become bright yellow and each of their 50 to 60 rings flashes bright blue as a warning display. If they are provoked, they can change their color very quickly. Like all other octopus, they can change shape easily, which helps them to squeeze into crevices much smaller than themselves. The venom paralyzes the muscles required for movement, in turn killing the prey.īlue-ringed octopuses spend most of their time hiding in crevices. It then uses its horny beak to pierce through the tough exoskeleton of the prey and releases venom. To catch prey, the blue-ringed octopus pounces on it, seizing it with its tentacles and bringing it towards the mouth. They will also take advantage of small fish, especially injured ones, if they can catch them. The blue ringed octopus feeds on crustaceans, such as crabs and shrimps, and other invertebrates. Male blue-ringed octopus can have an even shorter lifespan than this, as they die after mating. The blue ringed octopus has a fairly short lifespan of about two years. Like other octopuses, the blue-ringed octopuses have two very well developed eyes and two, strong parrot-like beaks. ![]() The base color of their mantle is yellowish, but can change to brighter shades when the octopus is threatened. They are bilaterally symmetrical and have a notable appearance, with 50 to 60 bright blue rings along the dorsal and the lateral surfaces of the mantle. This makes them about the same size as a golf ball. Hapalochlaena nierstraszi was documented and described in 1938 from a single specimen found in the Bay of Bengal.īlue-ring octopuses are very small animals, measuring from 12 to 20 cm (5 to 8 in) and weighing 10 to 100 grams, depending on the subspecies and age.Blue-lined octopus (Hapalochlaena fasciata): Found between southern Queensland and southern New South Wales, particularly in rocky shores and coastal waters at a depth of 15 meters (49 feet).Southern blue ringed octopus or lesser blue-ringed octopus (Hapalochlaena maculosa): Found along the southern coast of Australia.Greater blue-ringed octopus (Hapalochlaena lunulata): Found in the tropical waters of the Pacific Ocean.There are four confirmed species of Hapalochlaena, and six possible but still undescribed species being researched. They are threatened mostly by humans, with loss of habitat and overfishing. The blue ringed octopus is not thought to be of conservation concern currently, but the exact population number of these animals is unknown. No blue-ringed octopus anti-venom has yet been discovered. A single bite might lead to partial or complete paralysis, blindness, loss of senses, nausea, and resultant death within minutes, if left untreated. These cephalopods are small, but are in fact one of the world’s most venomous marine animals. They comprise the genus Hapalochlaena and can be by their yellowish skin and characteristic blue and black rings that change color dramatically when they are threatened. Blue ringed octopus are four highly venomous octopus that are found in tide pools and coral reefs in the Pacific and Indian oceans, from Japan to Australia. ![]()
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