In the video, a young girl is swimming in a pool with a mermaid tail. She is swimming gracefully and effortlessly, moving her arms and legs in a synchronized manner. The pool is surrounded by a pool deck and there are other people around, some of whom are also swimming. The girl is wearing a pink swimsuit and the mermaid tail is a vibrant blue with a shimmering effect. The water is clear and the pool is well-maintained. The girl seems to be enjoying herself, and the other swimmers are also having a good time.