the squid must have been seven or eight metres (22 to 26 feet) long. Wednesday, 15 Jan., 2003, 16:50 GMT Giant squid Architeutis dux 'attacks French boat' ….De Kersauson says his squid was three times as big ….two of the tentacles were blocking the rudder. Squids use their siphon –To fire a jet of water, which allows them to swim very quickly Figure 33.22b (b) Squids are speedy carnivores with beaklike jaws and well-developed eyes. Figure 33.22a (a) Octopuses are considered among the most intelligent invertebrates. Very good at changing color so they are camouflaged in nature. Some have toxin associated with their bite. Most octopuses –Creep along the sea floor in search of prey.
Can crawl out of their tanks into another eat the crabs and return to their own –Elaborate sex where male inserts packets of sperm into mantle cavity of female. Squid can feed on herring by zipping through a school. –Closed circulatory system –Well developed eye similar to vertebrate eye (lens, retina etc) –Very active life style. Foot modified to form siphon, tentacles and head. Foot modified to."- Presentation transcript:Ĭephalopods Class Cephalopoda includes squids and octopuses –Carnivores with beak-like jaws surrounded by tentacles. Cephalopods Class Cephalopoda includes squids and octopuses –Carnivores with beak-like jaws surrounded by tentacles.
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