They possess the largest brain in the animal kingdom and spend much of their lives in the light-starved depths of the oceans hunting prey. The mighty sperm whales look nothing like any other whale. For a start, they each have an enormous square-shaped head which accounts for around a third of their body length. They have stumpy dorsal fins and two relatively small pectoral fins on either side of their wrinkle-covered bodies. Perhaps their most recognizable trait though is their jaw, containing up to 52 cone-shaped teeth in the lower half, weighing a kilo each! Take a deep breath.
Sperm Whale Facts
sperm whale | Size, Teeth, Diet, Habitat, & Facts | fairfieldstatehospital.com
It is the only living member of the genus Physeter and one of three extant species in the sperm whale family , along with the pygmy sperm whale and dwarf sperm whale of the genus Kogia. The sperm whale is a pelagic mammal with a worldwide range, and will migrate seasonally for feeding and breeding. The females cooperate to protect and nurse their young. Females give birth every four to 20 years, and care for the calves for more than a decade.
The sperm whale is the largest toothed whale. Males reach 60 feet 17 m in length and the smaller females are 37 feet 12 m. They are dark gray in color, have a hump rather than a dorsal fin, and usually display their tail flukes when they dive. Their skin is wrinkled to increase surface area for heat loss, giving them a shriveled look. Their heads make up one-third of their body length and are squarish in shape.
They also have the largest brain out of any animal known to exist. Female sperm whales on the other hand tend to be much smaller growing to lengths of 34 — 38 ft. The head of the whale contains an organ known as the spermaceti organ, hence its name, which was once believed to produce sperm, but has since been proven to serve another unknown use.