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.
At that size they would find a whole new range of things to eat: mackerel, menhaden, entire squid swallowed in a gulp. But they would in turn be feasted upon by giant tuna, swordfish and especially mako sharks, whose diet is 75 percent bluefish.