Seals

Climate and ocean-circulation changes that happened millions of years ago likely contributed to the differences in appearance between certain species of male and female seals.

Across the globe, seals gained protections in 2013.

Increasing numbers of seals are ending up stranded along the US East Coast, a trend that correlates to the diminishing of sea ice in the northwest Atlantic.

New research sheds light on how a snoozing seal shuts down just half of its brain at a time.

Six groups of seals threatened by shrinking sea ice are gaining new protections under the Endangered Species Act (ESA).

Glowing fish give away their hiding spots to the world's largest seal.

The youngster weighs about 8 pounds.

The Greenland sleeper shark may not be fast, but it's resourceful.

New data gives insight into the seal's lifestyle, including a record-setting dive more than a mile deep.

Antarctic seal pups may not have the energy to learn foraging skills or grow healthy.