The video captures a lionfish swimming in the ocean. The fish has a distinctive appearance with long, flowing fins and a striped body. The fins are spread out, creating a fan-like effect, and the fish moves gracefully through the water. The colors of the fish are predominantly white and red stripes, with some black spots. The background is a deep blue, indicating the depth of the ocean. The video is shot in high definition, allowing for clear visibility of the fish's features.