Scientists have traced ancient Martian shorelines inside a giant canyon, revealing where a vast ocean once stood and why ...

Ancient shoreline features hint that water on Mars once formed a vast ocean.

"The structures that we were able to identify in the images are clearly the mouth of a river into an ocean." The post ...

Spacecraft orbiting the Red Planet have helped researchers map out an ancient coastline that surrounded a large ocean billions of years ago ...

THE world’s first legally binding agreement to protect marine life in international waters took effect on Jan. 17, marking a ...

Each year, vast blooms of phytoplankton spread across the Southern Ocean, drawing carbon dioxide from the atmosphere and ...

Redwing is autonomous underwater glider expected to circle the world in a little over four years, then return to Cape Cod.

Scientists exploring the South China Sea's Dragon Hole, a deep underwater sinkhole, discovered a thriving microbial world and ...

For most of modern history, the open ocean has been treated as a place apart. Beyond the 200-nautical-mile limits of national ...

Beneath Antarctica’s Ross Ice Shelf is a hidden ocean – a vast, dark cavity roughly twice the volume of the North Sea.

Far below the surface of the western Pacific Ocean, scientists have uncovered a geological system that reshapes how you may ...

While Io, the most volcanically active moon in the solar system, appears completely dry and devoid of water ice, its neighbor ...