The video shows a person wearing a black wetsuit and flippers swimming underwater. The person is holding a camera and appears to be filming the underwater environment. The water is clear and blue, and there are rocks and coral visible on the ocean floor. The person is swimming in a horizontal position, with their arms extended forward and their legs kicking gently to propel them forward. The camera captures the person from different angles as they swim through the water, providing a view of the surrounding underwater landscape.