Giant Porites Coral, Porites sp., Christmas Island, Australia

Yellowback Anthias over Coral Reef, Pseudanthias evansi, Christmas Island, Australia

Mountain coral (porites lutea), Ras Mohammed National Park, Sharm El Sheikh, Red Sea, Egypt, North Africa, Africa

A healthy and colorful coral reef thrives among the scenic islands of Raja Ampat, Indonesia.

A beautiful coral reef thrives among the remote, tropical islands of Raja Ampat, Indonesia.

A beautiful coral reef thrives among the remote, tropical islands of Raja Ampat, Indonesia.

Lobe coral (Porites lobata) covered with christmas tree worms (Spirobranchus giganteus), Namu atoll, Marshall Islands, Pacific

Small giant clam (Tridacna maxima) surrounded by lobe coral (Porites lutea), Namu atoll, Marshall Islands, Pacific

Lobe coral (Porites sp.), Namu atoll, Marshall Islands, Pacific

Blue seastar, Linckia laevigata, hanging on a boulder coral, Porites sp. Buyat Bay, North Sulawesi, Indonesia, Pacific Ocean.

Small giant clam (Tridacna maxima) surrounded by lobe coral (Porites lutea), Namu atoll, Marshall Islands, Pacific

Mountain coral (Porites lutea) with diver exiting the water at the surface. Ras Umm Sid, Sharm El Sheikh, South Sinai, Red Sea, Egypt.

Christmas tree worms (Spirobranchus giganteus) on lobe coral (Porites lobata), Namu atoll, Marshall Islands, Pacific

Lobe coral (Porites spp.), Namu atoll, Marshall Islands, Pacific

Acropora hard corals ( Porites antennuata) and school of Anthia fish, reef crest, Sipadan, Sabah, Malaysia, Borneo, South-east Asia

A magnificent anemone, Heteractis magnifica, in a shallow hard coral garden featuring several species of hard coral including finger and plate corals such as Porites sp., and Acropora sp., Komodo National Park, Nusa Tenggara, Indonesia, Pacific Ocean Komodo National Park, Nusa Tenggara, Indonesia, Pacific Ocean

Several species of small schooling fish such as damselfish, fusiliers, and anthias feed on plankton in the water column above hard corals, Porites sp., and Acropora sp., Komodo National Park, Nusa Tenggara, Indonesia, Pacific Ocean

A magnificent anemone, Heteractis magnifica, in a shallow hard coral garden featuring several species of hard coral including finger and plate corals such as Porites sp., and Acropora sp., Komodo National Park, Nusa Tenggara, Indonesia, Pacific Ocean Komodo National Park, Nusa Tenggara, Indonesia, Pacific Ocean

Anthias, Pseudanthias sp., swim over a hard coral garden with a variety of different hard corals including table, branching, cabbage or lettuce, staghorn, and leather varieties, Acropora sp., Porites sp., Echinopora sp., Sarcophyton sp., Spice Islands, Maluku Region, Halmahera, Indonesia, Pacific Ocean

Several species of small schooling fish such as damselfish and anthias feed on plankton in the water column above hard corals, Porites sp., and Acropora sp., Komodo National Park, Nusa Tenggara, Indonesia, Pacific Ocean

Split shot or over under of a shallow reef with a variety of table, leather, and staghorn corals, Acropora sp., Porites sp., Litophyton sp., sarcophyton sp., and the island of Bunaken, Bunaken Marine Park, Manado, North Sulawesi, Indonesia, Pacific Ocean

Mountain coral (Porites lutea), Daedalus Reef dive site, Egypt, Red Sea, Africa

Two, Christmas tree worm (Spirobranchus giganteus) on stone coral (Porites), Red Sea, Aqaba, Kingdom of Jordan

Frontal view of starry sky flatworm (Thysanzoon nigropapilosus) crawling on stone coral (Porites), Red Sea, Port Ghalib, Egypt, Africa