Fin Whale

The fin whale is a very large, streamlined rorqual with a tall curved dorsal fin set well behind the midpoint of the body. Its most distinctive feature is asymmetric head colour: the lower right jaw is pale while the left side is dark. Adults commonly reach 18–22m, making this the second-longest living whale after the blue whale (Wikipedia, general species account).

Fin whales inhabit deep offshore waters in every major ocean, with many populations moving seasonally between high-latitude feeding grounds and lower-latitude winter areas. They feed by lunging through krill or schools of small fish and filtering the engulfed water through baleen. The species is a fast swimmer and is usually encountered alone, in pairs or in small groups (Wikipedia, general species account).