Ocean

A huge methane leak discovered in the Baltic Sea spans 7.7 square miles, with masses of gas bubbles rising almost all the way to the ocean surface.

The deep sea, which encompasses waters deeper than 660 feet (200 meters), is home to alien-like creatures, but we know far more about these inky depths than people think, ocean explorer Jon Copley tells Live Science.

The weird gold dome-shaped object was found during an NOAA expedition to the Gulf of Mexico and is now being preserved in ethanol until it can be sent for laboratory analysis.

The golden, dome-shaped object was discovered in the Gulf of Alaska during an NOAA expedition and after bringing it to the surface, scientists still have no idea what it is.

The International Atomic Energy Agency — the UN's atomic watchdog — has said the release meets international safety standards with a "negligible radiological impact."

Sizzling ocean temperatures in the east-central tropical Pacific throughout July indicate there is a good chance El Niño conditions will remain strong for the next six months.

By combining high-definition maps with sensors that detect changes in the water column, researchers have created a "centimeter-scale" picture of how currents and tides shape the Monterey Canyon.

The unprecedented water temperatures — reaching up to 95 degrees Fahrenheit in some places — could intensify storms and hurricanes in the Sunshine State.

Scientists have puzzled over the origins of a gravity hole in the Indian Ocean for years. Now, researchers think the sunken floor of an extinct ocean could be the cause.

Photos show what looks like a line between the Atlantic and Pacific with different water colors on either side, but is there some kind of barrier or do the two oceans mix?