Ocean Sinkhole Why Do They Form What Do They Look Like And More
An ocean sinkhole, known popularly as a blue hole, is a large marine sinkhole that occurs close to the island made of coral reef and limestone.The opening of an ocean sinkhole is mostly formed on the surface and is visible to the eye, and can actually extend quite deep down into the ocean, far enough to even expose some submerged passages. Ocean sinkholes were first discovered towards the end of the 20th century by recreational divers and fishermen....