Seas are smaller than oceans and are partly enclosed by land. The deepest known area on Earth is the Mariana Trench. Located in the western Pacific, it's about 11 km or almost seven miles deep.

The ocean hides some of the most terrifying natural phenomena on Earth, capable of turning calm waters into deadly traps within moments. From mysterious underwater vortices like the Baltic Sea anomaly ...

HUNTINGTON BEACH, California. May 14. WHO are open water swimmers closest to achieving the elusive goal of the Oceans Seven? There are two swimmers with 6 out of the 7 channels conquered and ...

PITTSBURGH (NewsRadio 1020 KDKA) - Delmont-native Darren Miller is more then halfway through achieving a swimming milestone only few have attempted - finishing the Oceans Seven, the open water ...

Swimming through a cold, dark ocean in the dead of night, battling currents and swells and with no idea what ominous creatures might be lurking below, is a terrifying prospect for most. But for 42 ...

However, while it's true the oceans can provide us with some amazing eco-solutions like alternative energy, our activities place undue stress on these vast bodies of water. Here are the seven ...

It is one of the "Oceans Seven" swims. Much like the Seven Summits Hike, where the highest point on each continent are reached, these swims are situated worldwide and have become the Gold Standard ...

HUNTINGTON BEACH, California. May 14. WHO are open water swimmers closest to achieving the elusive goal of the Oceans Seven? There are two swimmers with 6 out of the 7 channels conquered and ...