The video captures a serene underwater scene with a large school of fish swimming in a blue ocean. The fish are predominantly grey with some white spots and have a streamlined body shape. The camera focuses on a particular fish that approaches the camera, revealing its large, round eyes and mouth. The fish appears to be a pufferfish, known for its ability to inflate its body when threatened. The surrounding water is clear, and the lighting suggests that the video was taken during the day.