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  2. Blue-ringed octopus - Wikipedia

    en.wikipedia.org/wiki/Blue-ringed_octopus

    They are one of the world's most venomous marine animals. [3] Despite their small size—12 to 20 cm (5 to 8 in)—and relatively docile nature, they are very dangerous if provoked when handled because their venom contains a powerful neurotoxin called tetrodotoxin .

  3. Greater blue-ringed octopus - Wikipedia

    en.wikipedia.org/wiki/Greater_blue-ringed_octopus

    The greater blue-ringed octopus, despite its vernacular name, is a small octopus whose size does not exceed 10 centimetres (3.9 in), arms included, with an average weight of 80 grams (2.8 oz). Its common name comes from the relatively large size of its blue rings (7 to 8 millimetres [0.28 to 0.31 in] in diameter), which are larger than those of ...

  4. Cephalopod attack - Wikipedia

    en.wikipedia.org/wiki/Cephalopod_attack

    All octopuses have venom, but few are fatally dangerous. The greater blue-ringed octopus, however, is considered to be one of the most venomous animals known; the venom of one is enough to kill ten adult humans. [3] It uses the neurotoxin tetrodotoxin, which quickly causes respiratory arrest. Estimates of the number of recorded fatalities ...

  5. Blue-lined octopus - Wikipedia

    en.wikipedia.org/wiki/Blue-lined_octopus

    Blue-lined octopuses are known to be nocturnal hunters, while other species in the genus such as the greater blue-ringed octopus (H. Lunulata) is known to be diurnal hunter. Prey for blue-lined octopuses mostly consists of crustaceans and stomatopods, however in captivity they have been recorded to eat live fish, suggesting they do in the wild ...

  6. Southern blue-ringed octopus - Wikipedia

    en.wikipedia.org/wiki/Southern_blue-ringed_octopus

    The southern blue-ringed octopus (Hapalochlaena maculosa) is one of three (or perhaps four) highly venomous species of blue-ringed octopuses. It is most commonly found in tidal rock pools along the south coast of Australia .

  7. Scientists spot rare, ghostly ‘Dumbo’ octopus in deep sea off ...

    www.aol.com/news/scientists-spot-rare-ghostly...

    They can range in size from under a foot to over 6 feet long, according to the aquarium, and lack an ink sac like other octopus species. The octopuses are foraging predators, who live so deeply ...

  8. Octopuses seen hunting together with fish in rare video - AOL

    www.aol.com/news/octopuses-seen-hunting-together...

    A new study found that some members of an octopus species hunt cooperatively in groups with fish. Video shows octopuses punching their companion fish to keep them on task and contributing to the hunt.

  9. Octopus DNA seems to confirm scientists’ theory about a long ...

    www.aol.com/octopus-dna-may-hold-clue-190025141.html

    A study of octopus DNA may have solved an enduring mystery about when the rapidly melting West Antarctic ice sheet last collapsed, unlocking valuable information about how much future sea levels ...