Dolphins and porpoises are actually whales. But whales are whales too. And so are narwhals. Sorry for springing that on you ...

This endangered cetacean is not only the smallest porpoise species, but the most rare. Where there were once thousands of vaquitas swimming in the sea, today there may only be about 10 individuals ...

A wildlife expert says he is concerned about a sudden drop in sightings of porpoises on the north Wales coast. Mick Green, ...

Put together, Phocoena sinus is the “porpoise of the Gulf of California.” The species is also known as the cochito, yet this common name is used to describe several marine animals in the geographic ...

There are around 90 described cetacean species in the world. The Museum's recent acquisition offers scientists a unique opportunity to solve some of the mysteries surrounding one of the least-known of ...

The Yangtze river’s finless porpoise is one of the very few porpoises (relatives of dolphins and whales) that live in fresh water. Its small size and cute 'smile' make it much loved in China and ...

a single death increases the odds that the species will become extinct. This undated file photo provided by The National Oceanic and Atmospheric Administration shows a vaquita porpoise.

Mexico's Gulf of California — one of the most biodiverse places on the planet — teems with 891 species of fish and a third of the world's cetacean species, including the smallest and most endangered ...