Marine Mammal Science & Conservation

Blainville's Beaked Whale


Blainville’s Beaked Whale (Mesoplodon densirostris)

Group formation: Small groups (mother-calf pair or groups of 3-7 with lead male)

Size: 4.3 – 4.8m

Weight: ca. 1 t

Spout: Inconspicuous

Age: 23+ years

Sexual maturity: 8-11 yrs

Gestation: 12 mths, with 3-4 yrs in between

Weaning: 12 months

Diet: Deepwater squid and fish.

Predators: killer whales, sharks, especially cookie cutter sharks.

Distribution: Worldwide tropical to warm temperate waters.

Raja Ampat: might be a local population but this is not confirmed yet. There is one sighting (2020) and one live stranding (2018). 

Population size: Unknown

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

Threats: Chemical and plastic pollution, man-made noise impacts (seismic surveys, military sonar).