Marine Mammal Science & Conservation

Pygmy killer whale

Pygmy killer whale (Feresa attenuata)

Group formation: Social groups 12-50 (>100)

Size: males 2.6 m, females 2.5 m, calf 0.8 m

Weight: 110-170 kg, calf unknown

Age: unknown

Sexual maturity: unknown

Gestation: unknown

Weaning: unknown

Diet: mostly fish (e.g. tuna) and squid (cephalopods), and smaller dolphins.

Distribution: rarely seen, from oceanic dolphin family (Delphinidae) that lives in tropical and semitropical oceanic deep (>1000m) waters throughout the world.

Raja Ampat: they have been sighted but nothing is known about them.

Population size: ca. 40.000, eastern tropical Pacific 39.800.

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

Threats: Whaling (Japan, Indonesia, West Indies, Sri Lanka), chemical and plastic pollution, man-made noise impacts (seismic surveys, military sonar), entanglement in fishing gear, over fishing, captivity (aggressive).

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