The video shows a person swimming in a pool while wearing a mermaid tail. The tail is green and the person is wearing a red top. The person is swimming gracefully and appears to be enjoying themselves. The water is clear and blue, and the pool is surrounded by a white border. The person's movements are smooth and effortless, as if they are a real mermaid. The video captures the person from different angles, showcasing the beauty of the mermaid tail and the grace of the swimmer.