The video shows a person holding a smartphone with a large screen displaying a colorful underwater scene. The phone is held in one hand, and the person's thumb is visible on the side of the phone. The underwater scene on the phone's screen features a variety of fish swimming around coral reefs. The colors of the fish are vibrant, with shades of orange, yellow, and blue. The coral reefs are a mix of green and brown hues. The background of the scene is a deep blue, indicating the depth of the ocean. The video is shot in a vertical format, and the phone is the main focus of the shot.