The video shows a person swimming in a pool, wearing a mermaid tail. The tail is green and red, and the person is swimming underwater. The person's movements are graceful and fluid, mimicking the movements of a real mermaid. The water is clear and blue, and the pool is surrounded by a blue tiled edge. The person's hair is also visible, and it is red. The video captures the person swimming from different angles, showcasing the beauty and grace of the mermaid tail.