Ocean

Fishermen in Norway came across a Russian spy late last week, but the interloper wouldn't reveal its mission, and with good reason: It couldn't, because it was a beluga whale.

The tallest ocean waves on Earth will only get bigger in the coming years, researchers expect.

The boat, named the Tara, has given scientists an unprecedented, detailed map of viruses in the marine ecosystem.

Greenland's ice sheet has undergone a stunning reversal in the last 46 years, as a meticulous new study documents.

We're witnessing a catastrophic shift in our planet's sea ice. Here's what the latest chapter means for you.

Stunning new video footage shows great white sharks hunting seals — all from the huge predator's perspective. The sharks were fitted with video cameras that recorded some surprising behaviors.

Like a rainbow, the anus of a comb jelly is a fleeting thing.

The biggest threat to seabirds isn't plastic straws. It's balloons.

A parrotfish in peril won a prominent photo prize.

Photographers from around the world competed to take home the top prizes in the 2019 Underwater Photographer of the Year contest.

When will the end come for the oceans?

The discovery could help explain why the Earth isn't a huge ball of ice.

The ship sank in a storm in 1684 off Dollar Cove in the Gunwalloe district of Cornwall's Lizard Peninsula.

Having traversed the tops of the world, he's now going deep.

The little sharks swim around inside their mom, switching between her multiple uteruses. When they get hungry they eat her unfertilized eggs.

Deadly waters are churning up and down the West Coast of the U.S. today, caused by a storm system originating close to Alaska.

When the U.S. Navy classified vital seafloor data during World War II and after, it delayed the development of a key theory.

Fish do it. So do jellyfish, starfish and sea cucumbers.

Marvel at the cuteness of a pea-size baby octopus.