Squid are cephalopods of the order Teuthida, which comprises around 304 species. Like all other cephalopods, squid have a distinct head, bilateral symmetry, a mantle, and arms.
Length:Colossal squid: 39 – 46 ft.
Krill are small crustaceans of the order Euphausiacea, and are found in all the world’s oceans. The name krill comes from the Norwegian word krill, meaning “small fry of fish”, which is also often attributed to species of fish.