The image is an underwater photograph of a yellow and black butterflyfish swimming over a coral reef. The butterflyfish has a round body with a black stripe running down its back and a white stripe on its head. Its eyes are large and black, and it appears to be swimming towards the right side of the image. The coral reef is covered in various shades of green and brown, and there are a few small rocks and coral reefs visible in the background. The water is clear and blue, and the overall scene is peaceful and serene.