PORTLAND - The competition between protected sea lions gobbling Columbia River salmon and impatient humans with empty fishing lines has led to vigilante action. A fisherman shot a sea lion who stole a ...

Here's what happens: The plankton eat algae that contains the acid, and then the fish eat the plankton, and the sea lions eat the fish — one thing surviving off another, passing on the toxic acid.

PORTLAND, Ore. - A federal agency has authorized the killing of some California sea lions that prey on migrating salmon and steelhead at the base of Bonneville Dam on the Columbia River. The lethal ...

In Namibia, a group of desert lions have left their traditional hunting grounds for the Atlantic coast and are now thriving ...

OREGON CITY, Ore. - Not only are sea lions feasting on endangered salmon in the Columbia River, now they're gorging on them along the Willamette River, too. It's getting so bad, sport fishermen said ...

Sea Lions in the Cowliz River, near the mouth of the Cowlitz and the Columbia rivers in southwestern Washington. (Photo by GarysFRP/Getty Images) The federal permit that allows Northwest states and ...