Steve O. Taylor (GHF) / Grain house in Dogon village. Mali, 2005-2006.

Chris Newbert / Right-handed Hermit Crab (Paguritta sp) colony in Hump Coral (Porites sp), Solomon Islands

Chris Newbert / Hermit Crab (Paguritta gracilipes) in Hump Coral (Porites sp) 30 feet deep, Solomon Islands

Georgette Douwma / Jewel tip coral {Porites attenuata} Great Barrier Reef, Australia

Georgette Douwma / Coralline encrusting algae growing on dead coral patches on Porites, forming a hard calcaerous deposit. Encrusting algae plays an important role in the ecology of coral reefs providing a food source f...

Georgette Douwma / Coralline algae growing on dead coral patches on Porites, forming a hard calcaerous deposit. Encrusting algae plays an important role in the ecology of coral reefs, providing food for many tropical fi...

Georgette Douwma / Christmas tree worms (Spirobranchus giganteus) on Porites coral boulder, Andaman Sea, Thailand

Alex Mustard / Mixed hard coral including finger coral (Porites porites) and soft corals growing on reef, Little Cayman, Cayman Islands, British West Indies, Caribbean Sea.

Alex Mustard / Star coral (Montastraea annularis) black searod (Plexaura homomalla) and finger coral (Porites porites) with a snorkeller exploring a shallow coral reef, East End, Grand Cayman, Cayman Islands, Britis...

Christian Ziegler / Hump Coral (Porites sp) growing directly under Red Mangrove (Rhizophora mangle), Bastimentos Marine National Park, Bocas del Toro, Panama

Christian Ziegler / Hump Coral (Porites sp), Bastimentos Marine National Park, Bocas del Toro, Panama

Christian Ziegler / Hump Coral (Porites sp), Bastimentos Marine National Park, Bocas del Toro, Panama

Pete Oxford / Clubbed Finger Coral (Porites porites), Bonaire, Netherlands Antilles, Caribbean

Juergen Freund / Hard / stone coral (Porites sp) Moluccas Islands, Indonesia.

Juergen Freund / Coral reef with a big boulder coral (Porites sp.) and diver. Misool, Raja Ampat, West Papua, Indonesia, January 2010.

Juergen Freund / Finger coral (Porites sp) growing from a coral pillar, Sipadan, Malaysia.

GEORGETTE DOUWMA / Jewel tip coral {Porites attenuata} Great Barrier Reef, Australia

Martha Holmes / Club finger coral {Porites porites} with extended polyps, Jamaica, Caribbean

GEORGETTE DOUWMA / Finger coral {Porites cylindrica} and Bristlestar, Great Barrier Reef, Australia

Georgette Douwma / Coral reef with table coral (Acropora sp), brain coral and porites coral. Rinca, Komodo National Park, Indonesia

Jeff Rotman / Shallow Coral Reef table, Red Sea, Egypt

Jeff Rotman / Coral Reef table, with reflections from the surface, Red Sea, Egypt

Jeff Rotman / Shallow Coral Reef table, with reflections from the surface, Red Sea, Egypt

Jeff Rotman / Shallow Coral Reef table, with reflections from the surface, Red Sea, Egypt

Juergen Freund / Craig Humphrey and Katharina Fabricius collecting Porites coral head for Coral Life census, Great Barrier Reef, Australia 2008

Juergen Freund / Split level of diver, Katharina Fabricius, and Porites coral heads in shallow reef, Coral Life census, Great Barrier Reef, Australia, 2008

GEORGETTE DOUWMA / Porites / Finger coral (Porites genus) with bite marks of a Bumphead parrotfish (Bolbometopon muricatum) Misool, Raja Ampat, West Papua, Indonesia.

GEORGETTE DOUWMA / Porites / Finger coral (Porites genus) with bite marks of a Bumphead parrotfish (Bolbometopon muricatum). Misool, Raja Ampat, West Papua, Indonesia.

GEORGETTE DOUWMA / Small giant clam (Tridacna maxima) in Porites coral. Andaman Sea, Thailand

Tim Laman / Massive hard coral (Porites sp.) with bite marks from feeding Parrot fish (Scarus sp) on a coral reef in Palau, Micronesia.

GEORGETTE DOUWMA / Christmas tree worms (Spirobranchus giganteus) on porites coral. Banda, Moluccas, Indonesia.

GEORGETTE DOUWMA / Christmas tree worms on porites coral. (S.giganteus) Similan Islands Andaman Sea, Thailand

GEORGETTE DOUWMA / Porites coral with Christmas tree worms {Spirobranchus giganteus} Similian Is, Thailand

Martha Holmes / Club finger coral (Porites porites) with polyps extended, Jamaica, Caribbean

GEORGETTE DOUWMA / Jewel tip coral {Porites attenuata} and Sea fan, Great barrier reef, Australia

Juergen Freund / Stone coral {Porites sp} with parrotfish bite scratches, Indo-Pacific

Doug Perrine / Longsnout seahorse {Hippocampus reidi} in Finger coral {Porites sp} Caribbean

Fred Bavendam / Hump Coral (Porites sp) one healthy, left, and the other badly bleached, Lembeh Strait, Indonesia

Chris Newbert / Harlequin Ghost Pipefish (Solenostomus paradoxus) female in front of Hump Coral (Porites sp) 80 feet deep, Solomon Islands

Chris Newbert / Star Horseshoe Worm (Pomatostegus stellatus) growing in Hump Coral (Porites sp) 40 feet deep, Solomon Islands

Fred Bavendam / Clubbed Finger Coral (Porites porites), South Caicos, British West Indies

Fred Bavendam / Hump Coral (Porites sp) colony, part of it exhibiting bleaching which occurs when a coral expels its Zooxanthellae possibly due to heat stress, Indonesia

Fred Bavendam / Hump Coral (Porites sp) colony, part of it exhibiting bleaching which occurs when a coral expels its Zooxanthellae possibly due to heat stress, Indonesia

GEORGETTE DOUWMA / Seasquirts, sponge and crinoid on Porites coral, Bunaken, Sulawesi, Indonesia.

Francis Abbott / Finger coral {Porites lutea} Bahrain, Persian Gulf

Francis Abbott / Finger coral {Porites nodifera} Persian Gulf

Jeff Rotman / Finger coral {Porites sp} Papua New Guinea

Christian Ziegler / Hump Coral (Porites sp) and tube songe, Bastimentos Marine National Park, Bocas del Toro, Panama

Christian Ziegler / Hump Coral (Porites sp) with Feather Duster Worm (Sabellidae) filter feeding, Panama

Christian Ziegler / Hump Coral (Porites sp) growing directly under Red Mangrove (Rhizophora mangle), Bastimentos Marine National Park, Bocas del Toro, Panama

GEORGETTE DOUWMA / Christmas tree worms on Porites coral (S giganteus) Thailand, Andaman Sea

GEORGETTE DOUWMA / Close up of Jewel tip coral {Porites antennuata} Great Barrier Reef Australia