The video shows a person swimming in a large aquarium. The person is wearing a scuba suit and is swimming in the water. The aquarium is filled with various types of fish and coral. The person is moving slowly through the water, observing the marine life. The lighting in the aquarium is dim, creating a serene atmosphere. The person appears to be alone in the aquarium, with no other people visible in the video. The water is clear, and the person is able to see the fish and coral clearly. The video does not contain any text or subtitles.