That sweet little face peering out of a coral labyrinth is that of a a goby fish. A goby fish is dependent on coral for its home, and in turn will often clean algae that would otherwise smother the coral. I took this photo in the course of field research for the Coral Reefs lab course in Panama (EEB 346) for a project on the ecology of coral reefs, focusing on interactions between corals, algae, and sea urchins.