Ocean

Microscopic algae that eat free-floating bacteria in the open ocean.

River bacteria can break down plant-based carbon, exhaling it as carbon dioxide.

Industrial pollution, if not curbed, could devastate marine organisms by the end of this century, a new report warns.

Plastic found in the stomachs of dead ocean birds reveals the Pacific Ocean off the northwest coast of North America to be more polluted than was realized.

Waterborne plastic debris could pose a toxic hazard to sea life.

All three lakes used to be part of the same ancient body of water.

Here are the measurements for the deepest depths in each of the world's five oceans, and a look at the unique animals that live in these deep zones.

An astronaut recently captured a stunning image of a "sunglint" that transformed the sea surrounding two Greek islands into a swirling silver mirror.

At subduction zones, where one plate bends deep beneath another, the sinking plate can carry more than an ocean's worth of water into the mantle over billions of years.