Marine protected areas offer many social and ecological benefits, but they're not resilient to the effects of ocean warming, research finds.

"A warmer ocean... will result in the death of hundreds of thousands to millions of marine birds within one to six months of the temperature increase."

A new robot inspired by the way tiny krill swim could help navigate oceans on Earth as well as on distant moons.

New research shows how an ocean-fertilizing bacterium, Trichodesmium, aggregates without central control.

Microplastics are changing the gut microbiomes of wild seabirds. Humans should be wary, too, researchers say.

2023 "will be a very active hurricane season," says Xubin Zeng. "People should get prepared."

A new method monitors when deep sea methane deposits convert to gas and rise toward the seafloor in amounts that were previously too small to detect.

Sunflower sea stars have huge appetites—munching through almost five purple sea urchins a week. That's good news for kelp forest restoration.

In a worst-case scenario, oceans will hit a tipping point in their ability to soak up emissions by 2100, researchers report.

The circular, chalky plates of marine algae E. huxleyi can act as catalysts for viral infection and are key to Earth's carbon cycle.