Ocean

Global warming during the Last Interglacial period caused so much Arctic ice to melt that Atlantic currents collapsed — and scientists say these are the conditions we could be heading toward.

Tsunamis and tidal waves are the powerful types of wave on Earth, but very different processes are involved in their formation.

Rain has so far been ignored in calculations of the ocean's capacity to take up carbon, but a new estimate shows it enhances the ocean sink by 5% to 7%.

A visualization from space of the Gulf Stream as it unfurls across the North Atlantic Ocean.

Icebergs and other glacial fragments regularly wash up on Iceland's southern Diamond Beach, making the sandy strip look like a field of gemstones.

Leading climate scientists ring alarm bell on key Atlantic Ocean current collapse in open letter

Sea angels — a type of swimming slug — that live in the open ocean are carnivorous little creatures that have evolved to feed on sea snails.

Earth from space This 2015 photo from the International Space Station showcases the deep tidal channels that cut through a line of cays in the Bahamas. Astronauts say it is "one of the most recognizable points on the planet."

The speed and direction of deep currents off Mozambique’s coast are more subject to change than scientists expected.

Every year, record-seeking surfers and spectators descend on the small Portuguese town of Nazaré for the "big wave" season, when water can surge up to 100 feet (30 meters) tall.