Fin Whale

Description

The fin whale (Balaenoptera physalus), also known as the finback whale or common rorqual, is a species of baleen whale and the second-longest cetacean after the blue whale. The biggest individual reportedly measured 26–27.3 m (85–90 ft) in length, with a maximum recorded weight of 65.5 to 120 tonnes (72.2 to 132.3 short tons; 64.5 to 118.1 long tons). The fin whale's body is long, slender, and brownish-gray in color, with a paler underside to appear less conspicuous from below (countershading). At least two recognized subspecies exist, one in the North Atlantic and one across the Southern Hemisphere. The species is found in all the major oceans, from polar to tropical waters, and is absent only from waters close to the pack ice at the poles and relatively small areas of water away from the open ocean. The highest population density occurs in temperate and cool waters. Its prey mainly consists of smaller schooling fish, small squid, and crustaceans, including copepods and krill. Mating takes place in temperate, low-latitude seas during the winter. Fin whales are often observed in pods of 6–10 animals, with whom they communicate using frequency-modulated sounds, ranging from 16 to 40 hertz. Like all other large whales, the fin whale was a prized kill during the "heyday" of whaling from 1840 to 1861. This remained so into the 20th century, but decades of overharvesting contributed to declining numbers through the late 20th century.

Summary adapted from the Wikipedia article “Fin whale”.