Home:Zoo:Mammals:Marine Mammals:Sperm Whales

Quick Facts
Kingdom: Animalia
Phylum: Chordata
Class: Mammalia
Order: Cetacea
Family: Physeteridae

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Family Physeteridae

Sperm Whale

The Physeteridae family consists of the Physeter genus and the Kogia genus. They range in size from the 59-foot sperm whale to the 12-foot pygmy sperm whale. They are found in all oceans of the world. Members of this family are deep divers and use sonarWhat does sonar mean? to navigate under water. They have teeth, but usually only in their lower jaw. The spermaceti organ sets these whales apart. This organ is composed of an oily, waxy substance that was once greatly prized by whalers, although it was the sperm whale that whale hunters hunted and not its smaller cousins.
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