Scientific family sperm whales
It is the sole extant species of its genus, Physeter, in the family genus Kogia, the pygmy sperm whale Kogia breviceps and the dwarf.
Sperm whale
Physeteroidea is a superfamily that, today, includes three extant species of whales: the sperm K. breviceps and the dwarf sperm whale K. simus, are sometimes also placed in this family, or else are placed in their own family, the Kogiidae.
Physeteroidea
FAMILY: Physeteridae Sperm whales have the largest brain of any living animal - weighing up to kg ( lbs.). 3. Some scientists believe that variations in oil density may assist the sperm whale in adjusting its bouyancy during dives.
Description:The head contains a spermaceti organ whose function is not entirely known. It may serve to focus and reflect sound or may be a cooling organ to diminish the whale's volume and its buoyancy during prolonged dives. The sperm whale has the largest of mammalian brains, both in proportion to its body and in sheer mass approximately 9 kg. Their blowhole is S-shaped and positioned on the left side of the head.
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