The video shows a person swimming in a pool while wearing a mermaid tail. The tail is red and green in color, and the person is swimming gracefully through the water. The person's movements are smooth and effortless, and they appear to be enjoying themselves. The water is clear and blue, and the pool is surrounded by a white border. The person's hair is tied up in a bun, and they are wearing a red top. The video captures the person swimming from different angles, showcasing the beauty and grace of the mermaid tail.