Fin Whale

Balaenoptera physalus

The fin whale (Balaenoptera physalus) is a huge baleen whale found in deep temperate and polar oceans, second in size only to the blue whale among living animals. It has a long streamlined body, a tall falcate dorsal fin set far back, and an asymmetrical head pattern, with the right lower jaw often pale and the left side darker. Fin whales feed by lunging through schools of krill or small fish and filtering water through baleen plates.

No ordinary human care setting can house fin whales; management is field conservation, research, and marine policy. Scientists use photo identification, acoustic monitoring, biopsy sampling, ship surveys, and satellite tags to study movement, population structure, and recovery after commercial whaling. Current stewardship concerns include vessel strikes, fishing gear entanglement, underwater noise, prey shifts, and climate effects on feeding grounds. Rescue teams may assist entangled animals only with trained crews and specialized equipment, because a distressed fin whale is powerful enough to kill people accidentally.