The blue-ringed octopus is another species of cephalopod class of molluscs along with snails and slugs. Nov 8, 2010 #1 hey everybody. James Cook University PhD student Brooke Whitelaw … Joined Mar 16, 2009 Messages 61. These small members of the cephalopod family are also related to other octopus species, along with squid, cuttlefish, and nautilus.You can easily recognize these small octopuses because … The small octopuses are common in tropical and subtropical coral reefs and tide pools of the Pacific and Indian Oceans, ranging from southern Japan to Australia. The blue-ringed octopus' size is only five to eight inches. Scientists have laid bare some of the poisonous secrets of the spectacular blue-ringed octopus. The blue-ringed octopus has a life span of around two years and varies depending on their nutrition, environment, temperature, and intensity of light in their area. Origin Temperate Waters of Southern AustraliaAverage Size 1-3 inchesLifespan 1-3 yearsDiet Blue Ring Octopi are primarily carnivorous (meat eaters) Crabs and bivalves (mussels) are this species main diet Frozen krill, shrimp, mussels. Blue ringed octopuses are some of the most venomous marine creatures in the world. The size of a Blue Ringed Octopus is 10 to 20 cm (5 to 8 in).There are four different species of the venomous blue-ringed octopuses. The blue-ringed octopus is an extremely venomous animal known for the bright, iridescent blue rings it displays when threatened. Thread starter Nippel; Start date Nov 8, 2010; N. Nippel O. bimaculoides. They prefer a depth from 0 to 20 m. Lifespan of the Blue ringed octopus. The blue-lined octopus (Hapalochlaena fasciata) has iridescent lines as well as circles. Primarily feeding on small crustaceans during the night, the octopus will wait until the venom has spread throughout their prey’s body before consuming. Registered. Blue-ringed octopus male and female mating; see the male inserting his reproductive tentacle into the female's funnel Birgitte Wilms/ A juvenile octopus grows at a rapid rate, perhaps because of its short life span. Blue-ringed octopus grows up from pea size to size of a golf ball on its lifespan. Do you have reliable information about the lifespan of Hapalochlaena lunulata? I've read a lot about that from six month up to two years. Blue Ringed Octopus. 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. Octopuses have a relatively short lifespan, and Blue ringed octopus … Can be found in the Pacific and Indian oceans, from Japan to Australia. They aren’t a give away to predators or even to humans, The Octopus is lurking behind his incredible camouflage, armed with one of the most deadly weapons on earth. Clever Small And Deadly. 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