Sperm whale

The sperm whale is the largest toothed whale, found in oceans worldwide. Its enormous head houses spermaceti, and it is known for deep dives and powerful echolocation.

Spermaceti organ: A large organ in the sperm whale’s head containing waxy spermaceti and involved in sound production. It occupies much of the distinctive head and helps shape the whale’s powerful clicks.
Cetacea: The mammalian order comprising whales, dolphins, and porpoises. Sperm whales are cetaceans adapted to a fully aquatic life.
Spermaceti: A waxy mixture of lipids found in the head of sperm whales. It was historically harvested for lighting, lubrication, and other products.
Moby-Dick: Herman Melville’s 1851 novel about the whaling ship Pequod and its pursuit of a white sperm whale. The novel made the sperm whale a lasting figure in literature and maritime culture.
Commercial whaling moratorium: The International Whaling Commission’s 1986 prohibition on commercial whaling, subject to exceptions and objections. The moratorium sharply reduced legal commercial hunting of sperm whales.
Echolocation: The use of reflected sound to detect objects and navigate. Sperm whales use clicks and returning echoes to find prey in dark depths.
Toothed whale: A cetacean in the suborder Odontoceti, which includes dolphins and porpoises. This group classification distinguishes sperm whales from baleen-feeding whales.
Whaling: The hunting and killing of whales for meat, oil, and other products. Sperm whales were heavily hunted for spermaceti and their oil-rich tissues.
Moby Dick (whale): The fictional white sperm whale pursued in Herman Melville’s novel Moby-Dick. This individual whale is the best-known literary representation of the species.
Endangered Species Act: A United States law enacted in 1973 to protect species at risk of extinction and their habitats. It protects sperm whales in U.S. waters and regulates activities affecting them.

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