130 dead seals washed up in Russia's Lake Baikal, and scientists have taken lake water samples and biopsies of the animals. Preliminary theories about the die-off did not suggest pollution is the reason.

Scientists studying dolphins dining off the California coastline have found that the marine food web is starting to look a little threadbare. The length of food chains in that web appears to have gotten shorter in response to environmental changes — such as those caused by El Niño events.

Around 20 bears have surrounded Ryrkaypiy attracted by the walruses that recently appeared at a special protected area. Several hundred frightened walrus fell to their deaths and the polar bears then ate the carcasses.

'Attention!!! Huge polar bear up running after birds behind Tasilik street!!!' Christine Boucher-Wight posted on the Iqaluit Public Service Announcement Facebook page.

Zoom in on this supposed image of sheep on a hillside and you'll be in for quite the surprise.

The extraordinary sight of a 30-foot long dead humpback whale that washed up on a beach area in Anchorage.

California sea lions are rare but occasionally show up in Southeast Alaska and have been documented in other parts of Alaska as well.

It's not yet clear what led to the humpback’s death or where it died, and biologists are warning people to stay away from the carcass.

Dozens of walruses were found dead earlier this month at their seasonal haulout near Point Lay. The findings came just about a day after locals said they saw an airplane they believed to be flying inappropriately over the herd, which comes to shore each year once the sea ice recedes past the continental shelf and it becomes too deep for them to feed.

Scientists are at a loss to explain one of the biggest mysteries surrounding the critically endangered North Atlantic right whale.

The Arctic barrier island where the carcasses were found has emerged as a favored end-of-summer haulout for animals trying to survive without summer sea ice.

Kachemak Bay has witnessed massive die-offs of sea stars, murres and razor clams. Whats going on?

Dolphin beaching in Sodwana Bay, South Africa

Dead humpback whale

Arctic Char (Salvelinus alpinus) with Saprolegnia

I was flying on Monday and found a giant beached dead humpback whale up on the mudflats near Birchwood. I see belugas all the time but never a humpback.

Dead sea otter and star fish

Tuesday’s (September 29) sighting of a gray whale swimming and possibly feeding right off the Stanley Park Seawall brings recent sightings up to three in that area. It isn’t clear if it is the same whale or different whales in the widely reported incidents since August 12. One whale, perhaps the same animal each time, was observed for days in the same area in English Bay, sometimes travelling into Burrard Inlet and off West Vancouver’s Ambleside Beach.

A dead juvenile female humpback whale near Dolgoi Island