The video shows a person swimming underwater in a pool with a group of fish. The person is wearing a black swimsuit and is seen swimming near the fish. The fish are of different sizes and colors, and they are swimming around the person. The water is clear and blue, and the pool appears to be indoors. The person is seen reaching out to touch the fish, and the fish are swimming around the person's hand. The video captures the interaction between the person and the fish, and the movement of the fish in the water.