Juergen Freund / Split-level shot of Tube corals (Tubastrea sp) encrusted on mangrove roots in the shallows. North Raja Ampat, West Papua, Indonesia, February 2010.

Juergen Freund / Tube corals (Tubastrea sp) encrusted on mangrove roots in the shallows. North Raja Ampat, West Papua, Indonesia, February.

Chris Newbert / Soft Coral (Dendronephthya sp) and Soft Coral (Tubastraea sp) reef scenic with schooling fish, Indonesia

Peter Scoones / Hard coral with polyps open {Tubastrea sp} Red Sea, Egypt

Flip Nicklin / Orange Cup Coral (Tubastraea coccinea) with feeding tentacles extended at night, Cocos Island, Costa Rica

Chris Newbert / Orange Cup Coral (Tubastraea coccinea), Kona, Hawaii

Fred Bavendam / Sea Star (Leiaster sp) crawling among Stony Coral (Tubastraea sp) on a reef wall, Manado, North Sulawesi, Indonesia

Fred Bavendam / Orange-spotted Filefish (Cantherhines pullus) sleeping at night among Sponges and Orange Cup Corals (Tubastraea coccinea), Bonaire, Caribbean

Fred Bavendam / Orange-spotted Filefish (Cantherhines pullus) sleeping at night among Sponges and Orange Cup Corals (Tubastraea coccinea), Bonaire, Caribbean

Juergen Freund / Tube coral, polyps open {Tubastraea sp} Indo Pacific

Jeff Rotman / Cup coral polyps {Tubastraea sp} feeding at night Red Sea

Jeff Rotman / Cup coral {Tubastrea sp.} feeding on young Octopus at night, Red Sea

Loic Poidevin / Spotted thick-knee (Byrhinus capensis) in bush, Masai Mara, Kenya.

Sylvain Cordier / Bush stone-curlew (Burhinus grallarius) on the nest, Queensland, Australia

Roger Powell / Bush stone-curlew (Burhinus grallarius) with two chicks. Werribee, Victoria, Australia.

Roger Powell / Bush stone-curlew (Burhinus grallarius) standing over its egg. Werribee, Victoria, Australia.

Martin Willis / Bush Stone-curlew (Burhinus grallarius), Magnetic Island, Queensland, Australia

Jan Wegener / Bush Stone-curlew (Burhinus grallarius), Magnetic Island, Queensland, Australia

Jan Wegener / Bush Stone-curlew (Burhinus grallarius), Magnetic Island, Queensland, Australia

Jan Wegener / Bush Stone-curlew (Burhinus grallarius), Magnetic Island, Queensland, Australia

Jan Wegener / Bush Stone-curlew (Burhinus grallarius), Magnetic Island, Queensland, Australia

Jan Piecha / Bush Stone-curlew (Burhinus grallarius), Queensland, Australia

Mark Carwardine / Bush stone curlew {Burhinus grallarius} on nest, captive, Rainforest Habitat Wildlife Sanctuary, Port Douglas, Queensland, Australia

Mark Carwardine / Bush stone curlew {Burhinus grallarius} on nest, captive, Rainforest Habitat Wildlife Sanctuary, Port Douglas, Queensland, Australia