The video shows a vibrant underwater scene with several fish swimming around a coral reef. The fish are of different species, including a blue and yellow fish, a purple and yellow fish, and a group of orange and white fish with black stripes. The coral reef is covered in green algae and is surrounded by sand. The fish are seen swimming in and out of the frame, with some hiding behind the coral and others swimming in the open water. The video captures the natural beauty and diversity of the underwater ecosystem.