Adorably fuzzy sea otters aren’t just cute. The marine mammals serve a crucial role, helping to restore the giant kelp ...

When sea otters were reintroduced along the coastlines of islands in Southern California and British Columbia, researchers saw kelp forests return to areas that were destroyed by sea urchins.

The sneaky snackers? Sea otters. Once nearly wiped out by the fur trade, these playful predators had made a sudden comeback—and with them, so had the entire habitat. Today, about 100 otters call ...

River otters really do have more fun. They jostle, belly-slide across ice and snow and toboggan down embankments into water. Splish splash.

After being absent for more than a century, an effort to repopulate the Oregon Coast with sea otters is in the works. Oregon ...

A North American river otter has given birth to three pups at the Seneca Park Zoo — a first in the 132-year history of the ...