Pedro Narra / Bottlenose Dolphin (Tursiops truncatus) baby swimming near to mother, Sado Estuary, Portugal

Pascal Kobeh / Reef with hard corals, with on the foreground (Leptoseris sp), a moon coral (Diploastrea heliopora) in the background and on the right Acropa tables coral (Acropora sp.) Sulu Sea, Philippines

Pascal Kobeh / Sun coral (Diploastrea heliopora) with divers in the background, Madagascar. Indian Ocean. September 2012.

Solvin Zankl / Diploastrea brain / Honeycomb coral (Diploastrea heliopora) with closed polyps, Raja Ampat, West Papua, Indonesia, Pacific Ocean.

Georgette Douwma / Stony Coral (Diploastrea heliopora), Faviidae. Rinca, Komodo National Park, Indonesia, October.

Gary Bell/ Oceanwide / Double-star Coral (Diploastrea heliopora), Great Barrier Reef, Australia

David Fleetham / Two parasites attached to either side of Dwarf goby (Bryaninops sp.) perched on closed hard coral polyps (Diploastrea heliopora), Indonesia.

Joel Sartore / Photo Ark / Sunray brain coral (Diploastrea heliopora) close up portrait, Downtown Aquarium, Colorado. Captive.

Alex Mustard / Reeftop pipefish (Corythoichthys haematopterus) swimming over hard coral (Diploastrea heliopora), Laamu Atoll, Maldives, Indian Ocean.

Alex Mustard / Fluorescent coral (Diploastrea heliopora) at night on a coral reef in blue light, Laamu Atoll, Maldives, Indian Ocean.