![]() In the section on the giant squid in his famous book, Life of Animals, he mentions: "Most of the data on these giant octopuses can be found in Montfort’s book, The Natural History of Mollusks. Alfred Brehm (1829–1884) was one of the most significant naturalists of the 19th century.Estimates of the number of recorded fatalities caused by blue-ringed octopuses vary, ranging from seven to sixteen deaths most scholars agree that there have been at least eleven. It uses the neurotoxin tetrodotoxin, which quickly causes respiratory arrest. 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. Venom Īll octopuses have venom, but few are fatally dangerous. The largest beak ever discovered in this way had a lower rostral length of 49 millimeters ( 1 + 15⁄ 16 in), indicating that the original squid was 600 to 700 kilograms (1,300 to 1,500 lb). Many beaks have also been discovered in the stomachs of sperm whales, as the stomach juices dissolve the soft flesh of the squid, leaving the hard beaks behind. The beak had a lower rostral length of 42.5 millimeters ( 1 + 11⁄ 16 in). One of the largest beaks ever recorded was on a 495-kilogram (1,091 lb) colossal squid. ![]() ![]() Colossal squid use their beaks for shearing and slicing their prey's flesh to allow the pieces to travel the narrow esophagus. It is a tough structure made of chitin and marks the beginning of the cephalopod's digestive system. The cephalopod beak resembles that of a parrot. ![]()
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