A large reef manta ray (Mobula alfredi) swims through clear water in Raja Ampat, Indonesia. This beautiful region is known as the heart of the Coral Triangle and is a popular destination for scuba divers and snorkelers.

A beautiful set of tiny tunicates grows on a reef in Indonesia.This tropical region, within the Coral Triangle, is home to an incredible variety of marine life.

Abstract of a mushroom coral (Fungia sp.) growing on a reef in Indonesia. This tropical region, within the Coral Triangle, is home to an incredible variety of marine life.

A colorful and healthy coral reef thrives in shallow water in Raja Ampat, Indonesia. This remote region is known as the heart of the Coral Triangle due to its extraordinary marine biodiversity.

Limestone islands surround a beautiful lagoon in Raja Ampat, Indonesia. This remote region is known as the heart of the Coral Triangle due to its extraordinary marine biodiversity.

A myriad of hard and soft corals, as well as tropical reef fish at Vatu-I-Ra Conservation Park on Viti Levu, Fiji, South Pacific, Pacific

Rugged limestone islands surround a gorgeous lagoon in a remote part of Raja Ampat, Indonesia. This beautiful region is known as the heart of the Coral Triangle and is a popular destination for scuba divers and snorkelers.

Fragile corals grow in extremely shallow water in Komodo National Park, Indonesia. This part of the Coral Triangle is known for its high marine biodiversity and is a popular destination for scuba divers and snorkelers.

A beautiful nudibranch (Hypselodoris bullockii) crawls slowly across a reef in Indonesia. This tropical region, within the Coral Triangle, is home to an incredible variety of marine life.

A shortfin lionfish (Dendrochirus brachypterus) lays on the seafloor waiting for prey to swim near in Indonesia. This tropical region, within the Coral Triangle, is home to an incredible variety of marine life.

Limestone islands surround a beautiful lagoon in Raja Ampat, Indonesia. This remote region is known as the heart of the Coral Triangle due to its extraordinary marine biodiversity.

A broadclub cuttlefish (Sepia latimanus) uses camouflage to blend into a shallow coral reef in Raja Ampat, Indonesia. This remote region is known as the heart of the Coral Triangle due to its extraordinary marine biodiversity.

Rugged and remote, limestone islands rise around a beautiful lagoon seascape in Raja Ampat, Indonesia. This region is known as the heart of the Coral Triangle due to its incredible marine biodiversity. It is a popular destination for scuba divers and snor

Morning light shines on a beautiful limestone island in Raja Ampat, Indonesia. This region is known as the heart of the Coral Triangle due to its incredible marine biodiversity. It is a popular destination for scuba divers and snorkelers.

A tiny cleaner shrimp removes parasites from a Black-finned snake eel (Ophichthus cephalozona) on a sandy seafloor in Indonesia. This tropical region, within the Coral Triangle, is home to an incredible variety of marine life.

Soft leather corals grow in the shallow waters in the Solomon Islands, Melanesia. This region, in the eastern part of the Coral Triangle, harbors spectacular marine biodiversity and is known for its beautiful reefs.

A beautiful coral reef grows near a set of limestone islands in Raja Ampat, Indonesia. This remote, equatorial region is known as the heart of the Coral Triangle. It is a popular destination for scuba divers and snorkelers.

Forest-covered limestone islands surround a gorgeous lagoon in a remote part of Raja Ampat, Indonesia. This beautiful region is known as the heart of the Coral Triangle and is a popular destination for scuba divers and snorkelers.

A beautiful starfish (Linckia laevigata) lays on a thriving reef in Indonesia. This tropical region, within the Coral Triangle, is home to an incredible variety of marine life.

A Black-finned snake eel (Ophichthus cephalozona) pokes its head out of a sandy seafloor in Indonesia. This tropical region, within the Coral Triangle, is home to an incredible variety of marine life.

Soft corals, sponges, and other invertebrates compete for space on a beautiful reef in Indonesia. This tropical region, within the Coral Triangle, is home to an incredible variety of marine life.

Fragile, foliose corals grow on a beautiful reef slope in Raja Ampat, Indonesia. This remote, equatorial region is known as the heart of the Coral Triangle. It is a popular destination for scuba divers and snorkelers.

Wunderpus octopus, Wunderpus photogenicus. This rare species of octopus is sometimes found in sandy burrows on shallow slopes in the Coral Triangle. Lembeh Strait, North Sulawesi, Indonesia, Pacfic Ocean.

White-face butterflyfish, Chaetodon mesoleucos, Djibouti, Djibuti, Africa, Afar Triangle, Gulf of Aden, Gulf of Tadjourah

White-face butterflyfish , Chaetodon mesoleucos, Djibouti, Djibuti, Africa, Afar Triangle, Gulf of Aden, Gulf of Tadjourah

Christmas-tree-worm, Spirobranchus giganteus, Djibouti, Djibuti, Africa, Afar Triangle, Gulf of Aden, Gulf of Tadjourah

Common ghost goby on Red starfish, Pleurosicya mossambica, Djibouti, Djibuti, Africa, Afar Triangle, Gulf of Aden, Gulf of Tadjourah

White-face butterflyfish , Chaetodon mesoleucos, Djibouti, Djibuti, Africa, Afar Triangle, Gulf of Aden, Gulf of Tadjourah

Coral grouper, Cephalopholis miniata, Djibouti, Djibuti, Africa, Afar Triangle, Gulf of Aden, Gulf of Tadjourah

Common ghost goby on Red starfish, Pleurosicya mossambica, Djibouti, Djibuti, Africa, Afar Triangle, Gulf of Aden, Gulf of Tadjourah

Common ghost goby on Red starfish, Pleurosicya mossambica, Djibouti, Djibuti, Africa, Afar Triangle, Gulf of Aden, Gulf of Tadjourah

Common ghost goby on Red starfish, Pleurosicya mossambica, Djibouti, Djibuti, Africa, Afar Triangle, Gulf of Aden, Gulf of Tadjourah

Dwarf hawkfish, Cirrhitichthys falco, Djibouti, Djibuti, Africa, Afar Triangle, Gulf of Aden, Gulf of Tadjourah

Freckled grouper, Cephalopholis microprion, Djibouti, Djibuti, Africa, Afar Triangle, Gulf of Aden, Gulf of Tadjourah