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The Sperm Whale is the largest toothed whale. The Sperm whale has the biggest head of any animal; it can be about 20 feet long (6 m), and is about one-third of the whale's body. Its lower jaw is small and contains its huge, conical teeth (which fit into sockets in the upper jaw).
Diet: Sperm whales are carnivores (meat-eaters) that mostly hunt giant squid that live on the ocean bottom at great depths. They also eat fish, octopus, and skate.
Echolocation: Like other toothed whales, the Sperm Whale uses echolocation, a way of sensing in which they emit high-pitched clicks and sense them as they bounce back off objects (like prey). This is crucial in hunting in the dark ocean depths.
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