Sue Daly / Organpipe coral (Tubipora musica) Lembeh Straits, Sulawesi, Indonesia

Norbert Wu / Hawksbill Sea Turtle (Eretmochelys imbricata) eating Organ Pipe Coral (Tubipora musica) with tissue burns from stinging coral around face, Papua New Guinea

Georgette Douwma / Organ pipe coral {Tubipora musica} Bunaken, Sulawesi, Indonesia

Francis Abbott / Organ pipe coral polyps open {Tubipora musica} Yap Is, Palau

David Hall / Coral reef scene with Yellow boxfish (Ostracion cubicus), orange Cup corals (Dendrophyllia sp.), Branching hard corals (Acropora sp.), Sea fans (Melithaea sp.), red Soft coral (Dendronephthya sp.), Or...

Joel Sartore / Photo Ark / Organ pipe coral (Tubipora musica) portrait, Omaha's Henry Doorly Zoo and Aquarium. Captive, occurs in Indian and Pacific Ocean.

David Hall / Soft coral porcelain crab (Lissoporcellana nakasonei) pair in Organ pipe coral (Tubipora musica). Pantar, Alor Archipelago, Lesser Sunda Islands, Indonesia.