The video shows a person swimming underwater in a pool. The person is wearing a purple swimsuit and is swimming with their arms and legs. The water is clear and blue, and the person is moving slowly and gracefully. There is a fish swimming in the water, and the person is following it. The fish is yellow and black with a purple tail. The person is swimming towards the surface of the water, and the fish is swimming in the opposite direction. The person's movements are smooth and controlled, and they seem to be enjoying the experience of swimming underwater.