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Omura's whale (Balaenoptera omurai) is a relatively small species of rorqual baleen whale that was formally identified as a distinct species in 2003. It is distinguished from other Bryde's-like whales by its unique asymmetric coloration, featuring a darker right jaw and a white left jaw. This rare a...

Blainville's beaked whale is a species of toothed whale belonging to the family Ziphiidae. It is found in tropical and temperate waters across the Atlantic, Pacific, and Indian Oceans. This marine mammal is named after Henri Marie Ducrotay de Blainville and is noted for its dense, heavily ossified j...

The Southern Hemisphere ecological counterpart of Baird's beaked whale, named after French ship's surgeon M. Arnoux, and found in cold sub-Antarctic and Antarctic waters.

An Indo-Pacific beaked whale known for nearly a century only from two partial skulls before live animals were identified at sea and from strandings in the early 2000s.

A Southern Hemisphere beaked whale in which males possess two elongated teeth that curve over the upper jaw, physically limiting how wide the mouth can open.

The only beaked whale species known to possess a full set of functional teeth in both jaws, setting it apart from all other members of the family Ziphiidae.

Sowerby's beaked whale was the first beaked whale described by science, named by naturalist James Sowerby in 1804 from a specimen that stranded in Scotland.

A beaked whale of the Southern Ocean distinguished from its northern relative by a flatter forehead profile, and among the least-studied cetaceans in the world.

The pygmy sperm whale is a small toothed whale reaching about 3.5 m that is rarely observed alive at sea and is most often encountered through beach strandings.

Perrin's beaked whale was described as a new species in 2002 from five specimens stranded along the California coast and is named after cetologist William Perrin.

The dwarf sperm whale is the smallest member of family Kogiidae at only 2.7 m and releases a dark reddish-brown fluid from its intestine as a defense mechanism.

An Indo-Pacific beaked whale whose males possess wide, flat teeth resembling ginkgo leaves, known primarily from strandings with few confirmed open-ocean observations.

A Southern Hemisphere beaked whale named after British zoologist John Edward Gray, notable for occasionally mass-stranding in groups larger than those of any other beaked whale species.

True's beaked whale is a rarely observed species of the North Atlantic and southern Indian Ocean, first described by American zoologist Frederick True in 1913.

A rare North Pacific beaked whale named after Norwegian-American naturalist Leonhard Stejneger, known almost entirely from strandings with very few confirmed live sightings.

Gervais' beaked whale is a rare North Atlantic species first formally described by French zoologist Paul Gervais in 1855 and known primarily from strandings.

Hubbs' beaked whale is a rare North Pacific species first formally described in 1963 and named in honor of American marine biologist Carl Hubbs.

A tropical Indo-Pacific beaked whale named after Sri Lankan scientist P.E.P. Deraniyagala; synonymized with M. ginkgodens for decades before re-validation as a distinct species in 2014.

The pygmy beaked whale is a poorly known small beaked whale inhabiting tropical and warm temperate waters of the Pacific and Indian Oceans.

Andrews' beaked whale is a rare Southern Hemisphere species known primarily from strandings in the South Pacific, named after American naturalist Roy Chapman Andrews.

A small, poorly known beaked whale of Southern Hemisphere waters named after New Zealand naturalist Sir James Hector, with very few confirmed open-ocean sightings on record.