As well as having one of the smallest distributions of all marine cetaceans, they are also one of the smallest in size.

Subspecies
None.

Life span
Unknown.

Statistics
Body length: 1.2-1.5m, Weight: 30-55kg.

Physical description
Gulf porpoises are a variable dark grey/brown colour. They have a prominent shark-like fin, and dark eye and mouth patches. Gulf porpoises lack a beak. Like all porpoises, they have spade-shaped teeth (as opposed to conical in dolphins).

Distribution
Gulf porpoises live in the Gulf of California.

Diet
They feed on fish and squid.

Behaviour
Gulf porpoises live in groups of 1-25.

Conservation status
They are listed as Critically Endangered by the 2000 IUCN Red List.

Notes
Gulf porpoises are renowned for being very shy.