Wild sea otters are no longer such a rare sight along the eastern coast of Hokkaido, Japan’s northernmost main island. Experts reckon there are now more than 50 of the endangered marine ...

Sea otters are making great strides toward recovery in California, and new research shows that their growing numbers are directly correlated with the decline of one of the most invasive species in ...

An invasive species had taken over ecosystems across the West Coast and was threatening to dominate another one in Monterey County, California, when ecologist Rikke Jeppesen began her research two ...

HAMANAKA, Hokkaido--Sea otters have pupped off Cape Tofutsu here in eastern Hokkaido. Four pairs of mothers and pups have been spotted since the beginning of July, in a community of up to 14 otters.