Andrews' Beaked Whale - Mesoplodon bowdoini

Taxonomy & Nomenclature

Scientific Name Mesoplodon bowdoini
Author Andrews, 1908
Taxonomic Rank Species
Taxonomic # 180513
Common Names English: Andrew's Beaked Whale
Current Standing valid
Taxonomic Parents Kingdom: Animalia
  Phylum: Chordata
    Subphylum: Vertebrata
      Class: Mammalia
        Subclass: Theria
          Infraclass: Eutheria
            Order: Cetacea
              Suborder: Odontoceti
                Family: Hyperoodontidae
                  Genus: Mesoplodon
Taxonomic Children
Synonyms (since 1950)
Taxonomic data is courtesy of the Integrated Taxonomic Information System (ITIS)
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Physical Description / Field Identification

The external appearance of Andrews’ beaked whale is poorly known; however, its skeleton is similar to that of Hubbs’ beaked whale. Adult males are all dark, except for the front half of the beak, which is white.

The flattened tusks of males of this species emerge from the middle of the lower jaw on raised sockets, and protrude above the upper jaw. Females reach at least 4.6 m in length and males reach 4.7 m. Length at birth is presumed to be about 2 m.

Can be Confused With

The teeth of bulls, if seen well, will allow them to be distinguished from most other mesoplodonts. They are most likely to the mistaken for Blainville’s beaked whales.


To date, Andrews’ beaked whale is known only from the South Pacific and Indian oceans. Strandings have occurred in Australia, New Zealand, Tasmania, and the Kerguelen Islands.

Ecology and Behavior

Essentially nothing is known of the biology of this species, other than the few facts that have been gleaned from stranded individuals.

Feeding and Prey

Andrews’ beaked whales are assumed to feed primarily on cephalopods, like other members of the genus.

Threats and Status

Nothing much is known of the population status of the species. Andrews’ beaked whales are currently ‘Data Deficient’ (IUCN) and ‘Not Listed’ (ESA).



Baker, A.N. 2001. Status, relationships, and distribution of Mesoplodon bowdoini Andrews, 1908 (Cetacea Ziphiidae). Marine Mammal Science 17:473-493.

Dalebout, M.L. 2002. Species identity, genetic diversity, and molecular systematic relationships among the Ziphiidae (beaked whales). Ph.D. dissertation, University of Auckland, New Zealand.

Mead, J.G. 1989. Beaked whales of the genus Mesoplodon. pp. 349-430 in S.H. Ridgway and R. Harrison, eds. Handbook of marine mammals, Vol. 4: River dolphins and the larger toothed whales. Academic Press.

Pitman, R.L. 2002. Mesoplodont whales Mesoplodon spp. pp. 738-742 in W.F. Perrin, B. Würsig and J.G.M. Thewissen, eds. Encyclopedia of marine mammals. Academic Press.

ITIS TSN180513
Status - ESA, U.S. FWS -
Status - Red List, IUCN -
    DD (Global or one of the sub regions)
#records (spatial)3
#records (non-spatial)0
Latitude-54.48 - -36.47
Longitude139.80 - 158.95
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