The video shows a person swimming underwater in the ocean. The person is wearing a black swimsuit and blue fins. The water is clear and there are rocks and coral visible on the ocean floor. The person is swimming near the surface of the water, and there are small fish swimming around them. The person is moving their arms and legs to swim, and the fins are helping them move through the water more easily. The sunlight is shining through the water, creating a beautiful and serene atmosphere.