The image is a close-up of an underwater scene in an aquarium. The tank is rectangular in shape and is filled with water. On the left side of the tank, there is a coral reef with pink and white coral. In the center, there are two sea urchins, one with long, pointed spines and the other with a pointed tip. The urchin on the right side is larger and has a dark purple color. The rock in the tank is covered in small pebbles and there are a few other sea creatures scattered around. The background is dark and the tank appears to be well-lit.