African Marine Mammals


True's beaked whale

Mesoplodon mirus

by: Dagmar Fertl


The name:

The word Mesoplodon is from the Greek mesos for "middle", hopla for "arms" and odon for "tooth". These words in combination roughly translates to "armed with a tooth in the middle of the jaw". This animal is also named after the Latin word for "beautiful", mirus.

The look:

These whales look much like other mesoplodonts except that they have a prominent beak and slightly bulging forehead. The adult males have teeth at the very tip of the lower jaw.

The size:

This whale species grows to slightly over 5 m, weighing up to 1400 kg.

Location in Africa:

The True's beaked whale is known from Southeast Africa.

Interesting facts:

Very little is known about this species except that it feeds on squid.

Human impacts:

Human impacts in African waters are unknown.

IUCN Status:

Insufficiently known.


To learn more about True's beaked whales try these sources:

Jefferson, T.A. Leatherwood, S. and M.A. Webber. 1994. FAO Species Identification Guide, Marine Mammals of the World. FAO of the United Nations, Rome.

Leatherwood, S. and R.R. Reeves. 1987. The Sierra Club Handbook of Whales and Dolphins. Sierra Club Books, San Fransisco.

Kitchener A C. Herman J S. Re-identification of the supposed True's beaked whale Mesoplodon mirus from Scotland. Journal of Zoology (London) 236 (2). 1995. 353-357.

Tove M. Live sighting of Mesoplodon cf. M. mirus, true's beaked whale. Marine Mammal Science 11 (1). 1995. 80-85.

Marine Mammal Stranding Center


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