832-389404 - Soft coral, leather coral (Lobophytum) with semi-enclosed polyps, detail, Pacific, Great Barrier Reef, UNESCO World Heritage, Australia, Oceania
832-389415 - Colony of coral polyps in brain corallae (Physogyra lichtensteini), Pacific, Great Barrier Reef, UNESCO World Heritage Site, Australia, Oceania
832-389418 - Open coral polyps on the trunk of a soft coral (Dendronephthya), coral, Pacific, Great Barrier Reef, UNESCO World Heritage, Australia, Oceania
1116-46824 - A close look at the detail of Brain coral (Platygyra sinensis) during the day with the its polyps closed, Yap, Federated States of Micronesia
1116-39732 - This species of coral hermit crab (Paguritta sp) is well known, but still awaiting a name from biologists. It lives in a hole in hard coral and traps passing plankton in it's feathery antennae, Yap, Micronesia
1116-39948 - This soft coral crab or candy crab (Hoplophrys oatesii), is wearing a decoration of soft coral polyps on top of head as camouflage, Dumaguete, Philippines
1116-39725 - Mouth detail of a colourful and healthy Mushroom coral, Fungia fungites, that is growing on a tropical coral reef in the Philippines. Mushroom coral is unique in the coral world, in that it does not attach itself to the bottom, Philippines
1116-39953 - This hard coral colony in the Pacific has begun to bleach, expelling its symbiotic zooxanthellae, consequences of global climate change and climate warming, Yap, Micronesia
1067-65 - Coral polyps bleaching, Favia sp. Bleaching occurs when corals stress under high water temperatures and expel their symbiotic zooxanthellae. The coral will starve to death if it does not reacquire zooxanthellae. Buyat Bay, North Sulawesi, Indonesia, Pacific Ocean.
970-379 - Bell hydroid (Tubularia larynx) large group of individuals tightly packed togethe clearly showing polyp heads, St Abbs, Scotland, UK North Sea