In the video, a person is seen underwater in a tank with various types of coral and sea life. The person is using their hands to touch and move around the coral, examining it closely. The coral is of different colors and shapes, and the person seems to be interested in the different textures and patterns. The water is clear, and the lighting is bright, allowing for a good view of the underwater scene. The person appears to be wearing a diving suit and is fully submerged in the water.