Marine Mammal Science & Conservation

Pygmy sperm whale

Pygmy sperm whale (Kogia breviceps)

Group formation: Solitary or in pairs or up 6

Size: 3.5 m, calf 1.2 m

Weight: 400 kg, calf 50 kg

Age: 23-? yrs

Sexual maturity: 4-5 yrs

Gestation: 11mths, with 1-2 yrs in between

Weaning: 1 yr

Diet: squid (cephalopods)

Predators: killer whales, sharks – eject over 12 liters of viscous, dark reddish-brown liquid when they feel threatened or when trying to evade predators.

Distribution: tropical and temperate waters of the Atlantic, Pacific and Indian Oceans, in waters ranging from 400 to 1,000m.

Raja Ampat: might be a local population but this is not confirmed yet.

Population size: unknown

Conservation Status: Data Deficient ver 3.1, Pop. trend: unknown

Threats: Vessel collisions, whaling (Japan, Indonesia), chemical and plastic pollution, man-made noise impacts (seismic surveys, military sonar), entanglement in fishing gear, over fishing, die in captivity.


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