Many visitors say the Great Barrier Reef is best seen through a scuba mask, but it's no small feat to traverse the area's dive spots. When choosing which regions to explore, consider your skill level, ...

The SS United States, the fastest ocean liner to ever cross the Atlantic, is preparing for one final voyage. Then it'll be sunk and turned into the world's largest artificial reef.

The structural complexity of coral reefs creates a vibrant underwater city populated by a diverse assortment of characters.

This past spring, the National Oceanic and Atmospheric Administration announced that the world was undergoing a "global coral ...