It's hard to tell just how imperilled killer whales are. With several different forms—some of which may even be different species—it's unclear which are at serious risk and which are less vulnerable. But one group is ...
Large, predatory sharks occupy the top of ocean food chains, where they play important roles in maintaining diverse and healthy ecosystems. The loss of these predators can therefore have significant impacts on ecosystems.
Paying no attention to nearby divers, a killer whale and her calf hunting for food frolic in a snowy Norwegian fjord.
Arctic sea ice is now declining at a rate of 12.8 percent per decade - 2012 had the lowest amount of summer ice on record. The drastic change has numerous implications for Arctic ecosystems, from increased shipping - the ...
A new calf has been born to the critically endangered southern resident killer whales, researchers confirmed.
More than 50 beached pilot whales perished in New Zealand Friday, the latest in a spate of mass strandings this week that experts have linked to rising ocean temperatures.
Up to 145 pilot whales have died in a mass stranding in a remote part of New Zealand, with authorities saying Monday they made the "heart-breaking" decision to euthanise dozens that lay stricken on the shore.
Killer whales display personality traits similar to those of humans and chimpanzees, such as playfulness, cheerfulness and affection, according to new research published by the American Psychological Association.