The video shows a scuba diver swimming underwater in a clear blue ocean. The diver is surrounded by various types of fish and coral reefs. The water is calm and the visibility is good, allowing for a clear view of the marine life. The coral reefs are colorful and diverse, with different shapes and sizes. The fish are swimming around the reefs, some in schools while others are solitary. The scuba diver is wearing a wetsuit, flippers, and a mask, and is using a breathing apparatus to stay underwater. The video captures the peacefulness and beauty of the underwater world.