The image shows two orange sea urchins in an aquarium. The urchin on the left is larger than the one on the right, and they are both facing towards the right side of the image. The background is dark, and there are small bubbles visible in the water. The water is a deep blue color, and the surface of the aquarium is covered in small rocks and pebbles. The image is taken from a low angle, looking up at the two creatures.