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A venomous stonefish (Synanceia verrucosa) camouflages itself in sand in Komodo National Park, Indonesia. This tropical region in Indonesia is known for its spectacular coral reefs and high marine biodiversity.

A flathead fish camouflages itself in the sandy seafloor of Komodo National Park, Indonesia. This tropical region in Indonesia is known for its spectacular coral reefs and high marine biodiversity.

A pycnogonid, or sea spider, crawls along the mucky seafloor of Komodo National Park, Indonesia. This tropical region in Indonesia is known for its spectacular coral reefs and high marine biodiversity.

A live sundial shell (Architectonica perspectiva) crawls across the seafloor in Komodo National Park, Indonesia. This tropical region in Indonesia is known for its spectacular coral reefs and high marine biodiversity.

Detail of a large coral polyp in Komodo National Park, Indonesia. This tropical region in Indonesia is known for its spectacular coral reefs and high marine biodiversity.

Detail of an encrusting sponge growing on a reef in Komodo National Park, Indonesia. This tropical region in Indonesia is known for its spectacular coral reefs and high marine biodiversity.

Detail of a mushroom coral (Fungia sp.) on a reef in Komodo National Park, Indonesia. This tropical region in Indonesia is known for its spectacular coral reefs and high marine biodiversity.

Sunlight sparkles through a table coral (Acropora sp.) in Komodo National Park, Indonesia. This tropical region in Indonesia is known for its spectacular coral reefs and high marine biodiversity.

A venomous scorpionfish is found on a healthy coral reef in Komodo National Park, Indonesia. This tropical region in Indonesia is known for its spectacular coral reefs and high marine biodiversity.

A pair of Ceylon nudibranchs (Gymnodoris ceylonica) mate on a sandy slope in Komodo National Park, Indonesia. This tropical region in Indonesia is known for its spectacular coral reefs and high marine biodiversity.

A lionfish (Pterois volitans) displays its venomous spines in Komodo National Park, Indonesia. This tropical area in the western Pacific harbors an extraordinary array of marine organisms.

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.

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.

A colorful crinoid clings to a coral reef slope in Komodo National Park, Indonesia. This tropical region in Indonesia is known for its spectacular coral reefs and high marine biodiversity.

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.

A colorful nudibranch (Nembrotha kubaryana) crawls slowly across a reef near the island of Sulawesi, Indonesia. This beautiful, tropical region is home to an incredible variety of marine life.

A camouflaged horned flathead (Thysanophrys carbunculus) lays hidden on a sandy slope near the island of Sulawesi, Indonesia. This beautiful, tropical region is home to an incredible variety of marine life.

A stargazer fish (Uranoscopus sulphureus) camouflages itself in sand in Komodo National Park, Indonesia. This tropical region in Indonesia is known for its spectacular coral reefs and high marine biodiversity.

A stargazer fish (Uranoscopus sulphureus) camouflages itself in sand in Komodo National Park, Indonesia. This tropical region in Indonesia is known for its spectacular coral reefs and high marine biodiversity.

A spine-cheeked anemonefish (Premnas biaculeatus) swims among the tentacles of its host anemone in Wakatobi National Park, Indonesia.

Detail of a stony coral (Galaxea sp.) growing in Wakatobi National Park, Indonesia. This remote region is known for its incredible marine biodiversity and gorgeous reefs.

A lionfish (Pterois volitans) swims along the edge of a beautiful reef in Wakatobi National Park, Indonesia. This remote region is known for its incredible marine biodiversity and gorgeous reefs.

Crinoids cling to a large sponge on a healthy coral reef near the island of Sulawesi, Indonesia. This beautiful, tropical region is home to an incredible variety of marine life.

An unusual sea star (Linckia laevigata) clings to a diverse reef near the island of Bangka, Indonesia. This beautiful, tropical region is home to an incredible variety of marine life.

Young lily pads grow to the surface along the shallow edge of a freshwater lake in Cape Cod, Massachusetts. Vegetation, which provides habitat for fish, amphibians, and reptiles, grows wildly during summer months and then dies off during the fall and wint

A massive school of bigeye trevally (Caranx sexfasciatus) swims in deep water near Cocos Island, Costa Rica. This remote island is home to an incredible variety of marine life.

A large black-blotched stingray (Taeniura meyeni) swims in deep water near Cocos Island, Costa Rica. This remote island is home to an incredible variety of marine life.

Fast-growing corals (Acropora sp.) are being grown by scientists in the Caribbean Sea. Once they reach a certain size they will be planted on a reef that has been previously damaged.

A colorful set of gorgonians, reef-building corals, and other invertebrates grow on a diverse reef in the Caribbean Sea.

A yellow stingray (Urobatis jamaicensis) lays on the sandy seafloor of Turneffe Atoll in Belize. This small and beautiful elasmobranch ranges throughout the Caribbean Sea.

A colorful set of gorgonians, reef-building corals, and other invertebrates grow on a diverse reef in the Caribbean Sea.

A colorful set of gorgonians, reef-building corals, and other invertebrates grow on a diverse reef in the Caribbean Sea.

Lily pads grow along the shallow edge of a freshwater lake in New England. Aquatic vegetation, which thrives during summer months, provides vital habitat for many fish, amphibians, and reptiles.

Colorful lily pads grow along the shallow edge of a freshwater lake in New England. Aquatic vegetation, which thrives during summer months, provides vital habitat for many fish, amphibians, and reptiles.

Colorful lily pads grow along the shallow edge of a freshwater lake in New England. Aquatic vegetation, which thrives during summer months, provides vital habitat for many fish, amphibians, and reptiles.

A sleek blue shark (Prionace glauca) cruises through the cold waters off Cape Cod, Massachusetts, in the Atlantic Ocean. These beautiful elasmobranchs are found throughout the world in both temperate and tropical seas and are a species listed as Near Thre

Colony of tunicates grow on a reef in Wakatobi National Park, Indonesia. This remote region is known for its incredible marine biodiversity and gorgeous reefs.

Colorful tunicates and soft corals grow on a reef in Wakatobi National Park, Indonesia. This remote region is known for its incredible marine biodiversity and gorgeous reefs.

Detail of the colorful dorsal fin of a scorpionfish (Scorpaenopsis sp.) in Wakatobi National Park, Indonesia. This remote region is known for its incredible marine biodiversity and gorgeous reefs.

A pink anemonefish (Amphiprion perideraion) swims among the tentacles of its host anemone in Wakatobi National Park, Indonesia. This remote region is known for its incredible marine biodiversity and gorgeous reefs.

Detail of the texture on a mushroom coral (Fungia sp.) growing in Wakatobi National Park, Indonesia. This remote region is known for its incredible marine biodiversity and gorgeous reefs.

A small red starfish clings to coralline algae in Wakatobi National Park, Indonesia. This remote region is known for its incredible marine biodiversity and gorgeous reefs.

A shallow coral reef thrives in Wakatobi National Park, Indonesia. This remote region is known for its incredible marine biodiversity and gorgeous reefs.

A banded sea snake (Laticauda colubrina) swims at the surface in Wakatobi National Park, Indonesia. This is one of the most venomous snakes in the world.

Christmas tree worms (Spirobranchus giganteus) grow on a coral reef in Wakatobi National Park, Indonesia. This remote region is known for its incredible marine biodiversity and gorgeous reefs.

A pink anemonefish (Amphiprion perideraion) swims among the tentacles of its host anemone in Wakatobi National Park, Indonesia. This remote region is known for its incredible marine biodiversity and gorgeous reefs.

A beautiful nudibranch (Hypselodoris tryoni) crawls along the seafloor near Alor in the Lesser Sunda Islands of Indonesia.

A school of juvenile striped eel catfish (Plotosus lineatus) swims over the seafloor in Komodo National Park, Indonesia.

A bigfin reef squid (Sepioteuthis lessoniana) hovers in nighttime waters off the coast of Komodo Island in Komodo National Park, Indonesia.

A bigfin reef squid (Sepioteuthis lessoniana) hovers in nighttime waters off the coast of Komodo Island in Komodo National Park, Indonesia.

A large mantis shrimp (Lysosquilla sp.) uses its excellent eyesight to scan its underwater environment in the Lesser Sunda Islands of Indonesia.

A pair of beautiful nudibranchs (Hypselodoris tryoni) crawl along the seafloor near Alor in the Lesser Sunda Islands of Indonesia.

A predatory lizardfish is finishing off a meal of a blenny in the Lesser Sunda Islands of Indonesia.

Detail of a colorful giant clam (Tridacna maxima) growing on a reef near Alor in the Lesser Sunda Islands of Indonesia.

A female ribbon eel (Rhinomuraena quaesita) yawns as it lives on a sandy slope near Alor in the Lesser Sunda Islands of Indonesia.

A broadclub cuttlefish (Sepia latimanus) hovers above a beautiful coral reef in Komodo National Park, Indonesia.

A broadclub cuttlefish (Sepia latimanus) hovers above a beautiful coral reef in Komodo National Park, Indonesia.

A young hawksbill sea turtle (Eretmochelys imbricata) has found a quiet place to sleep in Komodo National Park, Indonesia.

A translucent shrimp (Vir philippinensis) crawls on bubble coral in Wakatobi National Park, Indonesia. This remote region is known for its incredible marine biodiversity and gorgeous reefs.

An ornate ghost pipefish (Solenostomus paradoxus) hovers above a coral reef in Raja Ampat, Indonesia. This remote, tropical region is home to extraordinary marine biodiversity.

Detail of a colonial tunicate growing on a reef in Raja Ampat, Indonesia. This remote, tropical region is home to extraordinary marine biodiversity.

Detail of a coral colony in Raja Ampat, Indonesia. This remote, tropical region is home to extraordinary marine biodiversity.

Acoel flatworms cover a coral colony on a reef in Raja Ampat, Indonesia. This remote, tropical region is home to extraordinary marine biodiversity.

A Papuan scorpionfish (Scorpaenopsis papuensis) lies on a reef in Raja Ampat, Indonesia. This remote, tropical region is home to extraordinary marine biodiversity.

Detail of a mushroom coral (Fungia sp.) on a reef in Raja Ampat, Indonesia. This remote, tropical region is home to extraordinary marine biodiversity.

A well-camouflaged devil scorpionfish (Scorpaenopsis diabolus) waits to ambush prey on a reef in Raja Ampat, Indonesia. This remote, tropical region is home to extraordinary marine biodiversity.

A hermit crab crawls across a reef in Raja Ampat, Indonesia. This remote, tropical region is home to extraordinary marine biodiversity.

A tiny shrimp (Periclimenes soror) lives on a pin-cushion starfish in Raja Ampat, Indonesia. This remote, tropical region is home to extraordinary marine biodiversity.

Colorful lily pads grow along the shallow edge of a freshwater lake in New England. Aquatic vegetation, which thrives during summer months, provides vital habitat for many fish, amphibians, and reptiles.

Colorful and flowering lily pads grow along the shallow edge of a freshwater lake in New England. Aquatic vegetation, which thrives during summer months, provides vital habitat for many fish, amphibians, and reptiles.

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.

A hawksbill sea turtle (Eretmochelys imbricata) is found on a reef at night in Komodo National Park, Indonesia.

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.

Colorful chocolate chip starfish (Protoreaster nodosus) cling to the seafloor of a seagrass meadow in Komodo National Park, Indonesia.

A white-spotted jellyfish (Phyllorhiza punctata) drifts in a strong current in the Lesser Sunda Islands of Indonesia.

Colorful reef fish, mainly Scalefin anthias (Pseudanthias squamipinnis), swim above a beautiful set of corals growing near Alor in the Lesser Sunda Islands of Indonesia.

Detail of the spiral tentacles arrangement of a feather duster worm (Bispira sp.) in Komodo National Park, Indonesia.

A warty frogfish (Antennarius maculatus) is well-camouflaged as it waits to ambush prey on a reef in Komodo National Park, Indonesia.

Colorful reef fish, mainly Scalefin anthias (Pseudanthias squamipinnis), swim above a healthy reef in the Lesser Sunda Islands of Indonesia.

A traditional fish trap, made out of bamboo, captures small reef fish near Alor in the Lesser Sunda Islands of Indonesia.

A predatory stonefish (Synanceia verrucosa) lies camouflaged in the sandy seafloor of Komodo National Park, Indonesia. This is the most venomous fish on Earth but uses its venom only for defensive purposes.

A predatory stonefish (Synanceia verrucosa) lies camouflaged in the sandy seafloor of Komodo National Park, Indonesia. This is the most venomous fish on Earth but uses its venom only for defensive purposes.

A beautiful Blue Velvet Head Shield sea slug (Chelidonura varians) crawls across a sandy seafloor near Alor in the Lesser Sunda Islands of Indonesia.

Detail of a feather duster worm growing on a coral reef near Alor in the Lesser Sunda Islands of Indonesia.

A young false clownfish (Amphiprion ocellaris) snuggles into its host anemone in Komodo National Park, Indonesia.

A shortfin lionfish (Dendrochirus brachypterus) waits for prey on the seafloor of Lembeh Strait, Indonesia.

A beautiful nudibranch (Glossodoris cincta) crawls on the black sand seafloor in Lembeh Strait, Indonesia.

A beautiful nudibranch (Halgerda batangas) crawls across the black sand seafloor in Lembeh Strait, Indonesia.