Even more remarkable...

...also from New Scientist, this video from the Cetacean Research Institute in South Korea. It shows a group of long-beaked common dolphins (Delphinus capensis) apparently attempting to save an injured dolphin by using their bodies to keep their companion afloat. This went on for over a half hour, until the injured animal died and was allowed to sink.

Great video...

...from the New Scientist web site.

Elephant seals are known to dive to depths of over a mile, remaining submerged for more than an hour, in search of food.  We haven't been able to watch the process, at least at the depths, until this.  A teenager watching a live video feed for a camera at a depth of almost 900 meters in the North Pacific saw this elephant seal making a snack of a lamprey.