They live in the sea and eat crill.
The sperm whale is a mammal. A sperm whale is related to people because they don't have eggs. They blow water through a special hole on the top of their backs. Sperm whales have prickly bristles to trap the crill.
Male sperm whales live up to 50 years. Female sperm whales live up to 30 years. They ONLY give birth when they are 9 years old. They have wrinkly grey skin.
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