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 ...
Blue holes are among the least understood features of the ocean floor. From the surface, they can appear ordinary, even calm, blending into the surrounding reef or open water. Below, however, they ...
During the Antarctic winters of 2016 and 2017, satellites detected something extraordinary in the Weddell Sea — a vast, circular hole in the middle of the frozen ocean. Roughly the size of Switzerland ...