Squids are cephalopods. The Cephalopods are a class of marine molluscs (soft-bodied animals) that include the octopus, squids, cuttlefish and nautilus. They have a well-developed head (cephalas), large brain and eyes that closely resemble vertebrate eyes in structure. The head is surrounded by prehensile tentacles.
The animals can move very rapidly through jet propulsion, which they generate by squirting water out of the mantle cavity that communicates with the exterior by a siphon or funnel.
(*The mantle is a fold of soft tissue that covers the body of many molluscs and encloses a cavity between it and the body proper.)
Mike Vecchione is a cephalopod expert and a member of the MAR-ECO Project. Read what he has written about cephalopods.
~ Read some interesting facts about cephalopods taken from the FAQs of Dr. James Wood's Cephalopod Page.
~ Read about the capture of a colossal squid in the waters off Antarctica
~ Giant Squid on Discovery Channel and BBC Nature
~ Giant squid in the news again - a