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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 .
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 ...
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 ...
Image credits: GDT #3 Underwater World, Highly Commended: Giant Pacific Octopus By Andrey Shpatak. Every year in autumn when the water cools down to around five degrees Celsius, giant Pacific ...
Image credits: an1malpulse #5. Animal campaigners are calling for a ban on the public sale of fireworks after a baby red panda was thought to have died from stress related to the noise.
Numerous animal species naturally produce chemical toxins which are used to kill or incapacitate prey or as a defense against predators. Venomous animals actively deliver their toxins (called venom ) into their target through a specially designed mechanism, such as a bite or sting , by using a venom apparatus , such as fangs or a stinger , in a ...
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.
The blue-lined octopuses start reproducing at a year old. [4] During breeding male blue-lined octopus will seek and mount females, they do not extend the hectocotylus and mate from a distance like other octopus species. [5] If they are successful, the female octopus will lay 50 to 100 eggs 30 days after the encounter. [4]