A rescue center says California sea lions are coming down with a potentially fatal bacterial infection in near-record numbers.The Marine Mammal Center in Sausalito says more than 220 sea lions rescued this year have been diagnosed with leptospirosis.

A walrus has tested positive for trichinella, also known as “pork worm” in Sanikiluaq, Nunavut according to the territorial health department.

Deaths of gray and harbor seals, in much greater numbers than usual, have been attributed to viruses related to distemper and the flu.

Small, approachable, deer found with possible broken jaw, discolored saliva, and injury on hindquarter.

Scientists recently announced they had found an Asian tapeworm species in pink salmon caught off the coast of the Kenai Peninsula. Listen now

Yukon subsistence fishermen face challenges with gear restrictions, closures, and reports of salmon potentially infected with ichthyophonus, impacting their summer fishing activities.

11-18-15 Bearded seal with hair loss - Shishmaref, Alaska, USA

Ten million scallops that have died in the waters near Qualicum Beach due to rising ocean acidity are the latest victims in a series of marine die-offs that have plagued the West Coast for 10 years. . .

10-19-13 Hairless seal - Shishmaref, Alaska, USA

Several sightings of dead baby belugas were reported on the shores of the community and in the area over the past few days.

5-29-12 Unusual bearded seal - Shishmaref, Alaska, USA

Ringed seal with sores found in Shishmaref.

Sitka black-tailed deer (Odocoileus hemionus sitkensis) seen with large amount of hair loss.

Seal with hair loss observed in Bering Strait region

Polar bear researchers with the U.S. Geological Survey are only halfway into their annual survey in Alaska and they've already come across nine bears – six in Barrow and 3 in Kaktovik – with signs of alopecia and skin lesions. The muzzle, face, eyes, ears and neck appear most affected, according to a bulletin published Friday by the agency.

At least a handful of sheep have died over the past month or so from pneumonia caused by a strain of bacteria that had not previously been found in bighorns anywhere in Oregon

Scientists are puzzled over what is causing hundreds of fish to wash up dead in South Florida, including an endangered species native to the region.

The mysterious eye illness that has been killing songbirds in mid Atlantic states have moved into North Carolina, the NC Wildlife Resources Commission reports.

"We had an unusually large number of calls about skunks that were acting strange or being found dead and it was all within the area where we had confirmed that the avian influenza virus was present in the snow geese," Dr. Margo Pybus, a provincial wildlife disease specialist with Fish and Wildlife Alberta Environment and Parks, said. "We believe that the skunks are feeding on the dead geese and they are getting enough virus that it’s actually affecting the skunks."