This colorful image depicts how species overtake one another, just as they do in a rain forest. On this whip coral a group of pretty blue tunicates and red encrusting sponge are thriving. Tunicates, though rather basic taking in nutrient rich water through one hole, crossing it over a membrane and pushing it out another hole, actually have a central nervous system. They are therefore classified as a Chordata. See also Gold Tunicates.
This image is available up to 7 x 10 inches and as a card.