Harbor porpoises, also known as common porpoises, are some of the smallest cetaceans, usually measuring between 4.6 to 6.2 feet and weighing between 99 and 143 pounds.

The female harbor porpoises are generally larger than the males and weigh around 168 pounds while the males are around 134 pounds. They are dark gray above with speckled sides and lighter beneath.

Four dolphins and a harbor porpoise have been found dead on or near beaches in New Jersey since Thursday, officials said Monday. Adult male common dolphins were found stranded in Sea Isle City and ...

The Yangtze porpoise (Neophocaena asiaeorientalis) used to be a common sighting in the Yangtze River. Boaters would watch their sleek silhouettes break the surface like ghosts from the deep. Today ...

People across the UK are being invited to take part in nationwide effort to spot whales, dolphins and porpoises.

Researchers analyzed 724 ancient Chinese poems that referenced the Yangtze porpoise. Some date back to the Tang dynasty (618–90 For centuries, the Yangtze porpoise was a common sight on the ...

The strange porpoise-harassing behavior was first scientifically documented in 1962. The new study analyzed 78 documented incidents and found three plausible explanations. Orcas at play ...

A team of scientists in China turned to an unusual source to track the population of the Yangtze River’s finless porpoises: ancient poems. The writings samples written over the past 1,400 years ...

The burnt remains of a harbour porpoise have been found on a beach. The creature's carcass was pictured on social media in the dunes of Redcar beach. Experts say it is common for porpoises to ...

For thousands of years the porpoises have lived in these waterways, consuming a range of fish. But as humans have begun to settle along the rivers, the porpoise's close proximity to man has put it ...