The image is an underwater photograph of a coral reef at night. The coral reef is covered in various shades of green and brown, with some areas appearing to be covered in algae and other marine life. In the center of the image, there is a large rock formation with a small fish swimming around it. The fish appears to be a sea slug, with its body partially submerged in the water. The background is dark, making the coral reef stand out even more. The image is taken from a low angle, looking up at the fish and the rock formation.