Dark blue spots have been seen off the Myrtle Beach area coast on Sunday and have caused some confusion. A Facebook Post on Sunday with more than 1,500 shares and 4,000 comments claimed that one ...

Blue holes are some of the most fascinating geologic formations on Earth. As the name suggests, a blue hole resembles a kind of underwater well of dark water surrounded by coral reef, and these ...

Have you ever wondered why some ocean water is so blue? ... (NOAA) adds, most of the world's oceans are "completely dark," as almost no light can penetrate depths beyond 656 feet, ...

Dark oxygen refers to oxygen produced at extreme ocean depths without the involvement of photosynthesis. This process occurs on the deep ocean floor, where light cannot penetrate.