Sperm whales are the largest of the toothed whales and have one of the widest global distributions of any marine mammal species. They are found in all deep oceans, from the equator to the edge of the pack ice in the Arctic and Antarctic. They are named after the waxy substance—spermaceti—found in their heads. The spermaceti is an oil sac that helps the whales focus sound.
New Jersey Endangered and Threatened Species Field Guide
Conservation Issues — The Dominica Sperm Whale Project
Population structure for sperm whales on an oceanic scale is largely unknown. Genetic, photographic, and molecular studies suggest that the female units largely remain in their natal waters, with males moving around the oceans and perhaps around the globe. The community using the waters in the eastern Caribbean has been estimated to be fewer than whales. While globally it is estimated that there are around , sperm whales down from about 1. While whaling of sperm whales has largely stopped, humans are still the sources of the major threats to sperm whales.
Ospreys are an indicator species. The health of their population has implications for the health our coastal ecosystems. The sperm whale is the largest toothed whale with adult males reaching a length of up to 60 feet. Adult males are significantly larger than adult females which may grow to a length of 36 feet.
The sperm whale or cachalot [a] Physeter macrocephalus is the largest of the toothed whales and the largest toothed predator. 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.