As well as having one of the smallest distributions of all marine cetaceans, they are also one of the smallest in size.
Body length: 1.2-1.5m, Weight: 30-55kg.
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).
Gulf porpoises live in the Gulf of California.
They feed on fish and squid.
Gulf porpoises live in groups of 1-25.
They are listed as Critically Endangered by the 2000 IUCN Red List.
Gulf porpoises are renowned for being very shy.