The video shows a person swimming in the ocean at night. The water is dark, and the visibility is low, but the person is clearly visible. They are wearing a wetsuit and are swimming with a snorkel and mask. The person is moving slowly and gracefully through the water, occasionally looking around and taking in the surroundings. The ocean is calm, and there are no other people or objects visible in the video. The lighting is dim, and the only source of light appears to be coming from the person's snorkel.