Ocean

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.

Check out some of the best photos from 2024's Ocean Photographer of the Year competition.

If Atlantic Ocean currents collapse due to melting ice sheets, researchers predict there will be huge shifts in tropical monsoon systems — and the effects could be irreversible for at least 100 years.

Every winter and spring, great white sharks that usually dwell off the coast of California gather in a remote section of ocean the size of Colorado — and scientists are slowly piecing together why.

For the first time, researchers have linked the amount of silver being buried in marine sediments to human-made climate change.

Researchers have mapped the path of a giant submarine avalanche that tore through the Agadir Canyon — a deep trench in the Atlantic seafloor off the coast of Morocco — 60,000 years ago.

Earth from space A recent landslide along the banks of a river in British Columbia completely dammed the waterway, leading to evacuation warnings and potentially dooming an endangered fish population trapped on the wrong side of the debris.

Earth from space This 2014 satellite photo shows a gigantic, multicolor phytoplankton bloom swirling off the coast of Argentina. More recent research has shown that similarly massive algal outbreaks may become less likely in the future thanks to climate change.

The carbonate compensation depth — a zone where high pressure and low temperature creates conditions so acidic it dissolves shell and skeleton — could make up half of the global ocean by the end of the century.