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  2. Blue-ringed octopus - Wikipedia

    en.wikipedia.org/wiki/Blue-ringed_octopus

    The major neurotoxin component of the blue-ringed octopus is a compound originally known as "maculotoxin"; in 1978, this maculotoxin was found to be tetrodotoxin, [17] a neurotoxin also found in pufferfish, rough-skinned newts, and some poison dart frogs; the blue-ringed octopus is the first reported instance in which tetrodotoxin is used as a ...

  3. Cuttlefish - Wikipedia

    en.wikipedia.org/wiki/Cuttlefish

    Additionally, the muscles of the flamboyant cuttlefish (Metasepia pfefferi) contain a highly toxic, unidentified compound [2] as lethal as the venom of fellow cephalopod, the blue-ringed octopus. [35] However, this toxin is found only in the muscle and is not injected in any form, classifying it as poisonous, not venomous.

  4. Aposematism - Wikipedia

    en.wikipedia.org/wiki/Aposematism

    Blue-ringed octopuses are venomous. They spend much of their time hiding in crevices whilst displaying effective camouflage patterns with their dermal chromatophore cells. However, if they are provoked, they quickly change colour, becoming bright yellow with each of the 50-60 rings flashing bright iridescent blue within a third of a second. [44]

  5. Tetrodotoxin - Wikipedia

    en.wikipedia.org/wiki/Tetrodotoxin

    Although tetrodotoxin was discovered in these fish, it is found in several other animals (e.g., in blue-ringed octopuses, rough-skinned newts, and moon snails). It is also produced by certain infectious or symbiotic bacteria like Pseudoalteromonas , Pseudomonas , and Vibrio as well as other species found in symbiotic relationships with animals ...

  6. List of venomous animals - Wikipedia

    en.wikipedia.org/wiki/List_of_venomous_animals

    Many species of octopus, squid, and cuttlefish make use of venom when hunting their prey. The blue-ringed octopodes ( Hapalochlaena spp.) produce tetrodotoxin , which is extremely toxic to even the healthiest adult humans, though the number of actual fatalities they have caused is far lower than the number caused by spiders and snakes, with ...

  7. 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 ...

  8. Adopt Me! - Wikipedia

    en.wikipedia.org/wiki/Adopt_Me!

    Due to the high cost of pets within the game, with some rare pets selling for up to US$300 on off-platform sites, [29] [30] a large subculture of scammers have risen within Adopt Me!. As the primary user base of Adopt Me! is on average younger than the rest of Roblox [citation needed], they are especially susceptible to falling for scams. [31] [32]

  9. 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 ...