Far below the turquoise surface of the Caribbean, an almost perfectly circular patch of dark water drops away so sharply that ...

In the South China Sea, near the Paracel Islands, the aqua-colored waters of an expansive shallow reef platform suddenly gives way to a near vertical shaft of vast darkness – an ocean sinkhole almost ...

Researchers have discovered an underwater sinkhole so deep, they haven’t even reached the bottom yet. Taam Ja' Blue Hole ...

Almost one decade of recorded data retrieved from deep coral reef dives reveals some of the first evidence of that climate ...