Sperm Whale

Physeter macrocephalus

The sperm whale (Physeter macrocephalus) is the largest toothed whale and one of the deepest-diving mammals. Its block-shaped head holds the spermaceti organ involved in sound production, while the narrow lower jaw carries the teeth that give the species its toothed-whale status. Sperm whales live in deep oceans worldwide, with females and young in long-term social units and mature males often ranging more widely. They feed mainly on squid, including large deep-sea species, locating prey with powerful clicks and spending long intervals far below the surface.

Human interaction with sperm whales is centered on protection, research, whale watching, and stranding response rather than ownership. Historic whaling drove many populations down, and modern conservation work tracks recovery through photo identification, genetics, acoustic monitoring, and satellite tags. Managers pay close attention to ship strikes, entanglement, ocean noise, pollution, and disturbance around resting groups. Responsible whale watching keeps distance and limits approach time, while strandings require specialized marine mammal teams because of the animal's size, protected status, and potential health risks.