Stichodactyla mertensii
…shaped, and are only about 1–2 centimetres (0.39–0.79 in) long. It contains obligate symbiotic zooxanthellae, and is a host to around half the species of anemonefish and one damselfish, Dascyllus trimaculatus. S. mertensii is found on rocky or coral substrate and is widespread throughout the tropical and subtropical…