septum noun [C]. âº a âthin âpart âdividing âtissues or âspaces in an âorgan such as the ânose or âheart: the ânasal septum. (Definition of septum from the Cambridge Advanced Learnerâs Dictionary & Thesaurus Â© Cambridge University Press). Browse. 1  septic.
Unfortunately, the giant squid Architeuthis has not been studied enough to make a comprehensive diet. From the few that have been dissected though, it was discovered that they would eat sperm whales that dive deep underwater.
Squids most commonly eat fish, crustaceans and other squids. Even the world's smallest squid is a predator, the southern pygmy squid (Idiosepius notoides). The females of this species grow to about 1 inch long, and males are about 3/4 inch. On the opposite end of the size spectrum is the giant squid (Architeuthis dux), the largest invertebrate in the world.