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Colorful soft corals (Dendronephthya sp.) adorn the stunning reefs of southern Raja Ampat, West Papua, Indonesia, Southeast Asia, Asia

A hard coral reef along with schooling anthias and reef fish, Crystal Bay, Bali island, Indonesia, Southeast Asia, Asia

Alcyonaria coral with schooling anthias dominate this Fijian reef scene, Fiji, South Pacific, Pacific

Raccoon butterflyfish (Chaetodon lunula) and saddle wrasse (Thalassoma duperrey), off the island of Lanai, Hawaii, United States of America, Pacific, North America

Close-up view of a Hawksbill sea turtle next to a red sea fan on a reef in Raja Ampat, West Papua, Indonesia, Southeast Asia, Asia

Euphorbia balsamifera growing on lava flows Malpais de Corona, Lanzarote, Canary Islands, Spain, Atlantic, Europe

Sand Island off Chindonan Island, Calamian Islands, Coron, Palawan, Philippines, Southeast Asia, Asia

Snorkelers swim above a blue hole on Palau's barrier reef. This hole formed when sea level was much lower than it is today.

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.

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.

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 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.

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.

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.

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 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 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.

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

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 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.

Fast-growing staghorn coral fragments, Acropora sp., are being grown in hopes of replanting colonies in reef areas of the Caribbean Sea that have been damaged.

Aerial view of a healthy fringing reef along the edge of Komodo Island in Komodo National Park, Indonesia. This tropical area in the Lesser Sunda Islands is known for its marine biodiversity as well as its infamous Komodo dragons.

A huge giant clam, Tridacna gigas, grows on a shallow coral reef amid the tropical islands of Raja Ampat, Indonesia.

A huge whale shark, Rhincodon typus, swims in sunlit Indonesian waters. This massive yet harmless shark feeds on planktonic organisms and can sometimes be found swimming near fishing platforms due to the scent of fish.

A black-banded sea krait, Laticauda semifasciata, swims over beautiful corals off the remote island of Manuk in the Banda Sea, Indonesia. This volcanic island is known as the island of the snakes.

A spotted porcelain crab, Neopetrolisthes maculatus, snuggles into its host anemone in Komodo National Park, Indonesia.

Adult southern rockhopper penguins (Eudyptes chrysocome), at breeding colony on West Point Island, Falklands, South America

A rare adult melanistic king penguin (Aptenodytes patagonicus), returning from feeding at sea tin Fortuna Bay, South Georgia, Polar Regions

Northern giant petrel (Macronectes halli) attempting to eat a king penguin chick (Aptenodytes patagonicus), Gold Harbour, South Georgia, Polar Regions

Battle-scarred beachmaster southern elephant seal (Mirounga leonina) bellowing a challenger, Peggotty Bluff, South Georgia, Polar Regions

Views of the Chilean research base Presidente Eduardo Frei Montalva, Antarctica, Southern Ocean, Polar Regions

Antarctic tern (Sterna vittata), feeding in the Enterprise Islands, Antarctica, Southern Ocean, Polar Regions

Antarctic tern (Sterna vittata), on the wreck of the Guvernoren in the Enterprise Islands, Antarctica, Southern Ocean, Polar Regions

Southern elephant seal (Mirounga leonina) bull holding adult female in the surf to mate with her, South Georgia, Polar Regions

Southern elephant seal (Mirounga leonina) weaner pup head detail on the beach at Gold Harbour on South Georgia, Polar Regions

Views of the wreck of the Guvernoren, a 20th century whale processing ship, in the Enterprise Islands, Antarctica, Polar Regions

Adult Magellanic penguin (Spheniscus magellanicus) at a breeding site on Peninsula Valdez, Patagonia, Argentina, South America

Adult brown bear (Ursus arctos) foraging along the shoreline at Pavlof Harbor on Chichagof Island, United States of America, North America

Mushrooms growing in the Tongass National Forest in southeast Alaska, Pacific Ocean, United States of America, North America

Harbor seal (Phoca vitulina) hauled out on ice calved from South Sawyer Glacier, Southeast Alaska, United States of America, North America

Adult leopard seal (Hydrurga leptonyx), hauled out on ice floe at Dorian Bay near the Antarctic Peninsula, Southern Ocean, Polar Regions

View of snow-covered Half Moon Island in the South Shetland Group, Antarctica, Southern Ocean, Polar Regions

A large pod of Gerlache Strait type B killer whales (Orcinus orca), traveling and socializing in Gerlache Strait, Antarctica, Polar Regions

Beaches of Arrecifes, Tayrona National Natural Park, Department of Magdalena, Caribbean Region, Colombia, South America

Adult dovekies (Little Auk) (Alle alle) at their breeding site amongst scree slopes at Rubini Rock, Tikhaya Bay, Hooker Island, Franz Josef Land, Russia, Arctic Ocean, Eurasia

Adult dovekies (Little Auk) (Alle alle) in flight at Rubini Rock, Tikhaya Bay on Hooker Island in Franz Josef Land, Russia, Arctic Ocean, Eurasia

Lindblad Expeditions guests explore Cape Flora on Northbrook Island in Franz Josef Land, Russia, Arctic Ocean, Eurasia

Adult black-legged kittiwake (Rissa tridactyla) in combat with a second kittiwake near Alexander Island, Franz Josef Land, Russia, Arctic Ocean, Eurasia

Adult snow petrel (Pagodroma nivea nivea), in flight near the Antarctic Peninsula, Antarctica, Southern Ocean, Polar Regions

A pod of killer whales (Orcinus orca) surfacing in Chatham Strait, Southeast Alaska, United States of America, Pacific Ocean, North America

Adult bull killer whale (Orcinus orca) surfacing in Chatham Strait, Southeast Alaska, United States of America, Pacific Ocean, North America

Curious walrus (Odobenus rosmarus rosmarus) near Apollo Island in Franz Josef Land, Russia, Arctic Ocean, Eurasia

Curious walrus (Odobenus rosmarus rosmarus) near Apollo Island in Franz Josef Land, Russia, Arctic Ocean, Eurasia

Curious walrus (Odobenus rosmarus rosmarus) near Apollo Island in Franz Josef Land, Russia, Arctic Ocean, Eurasia

Around the village of Masca in the Teno mountain massif, Tenerife, Canary Islands, Spain, Atlantic Ocean, Europe

Agricultural greenhouse at Guia de Isora, Southwest of Tenerife, Canary Islands, Spain, Atlantic Ocean, Europe

Chinstrap penguins (Pygoscelis antarctica), breeding colony at Half Moon Island, Antarctica, Southern Ocean, Polar Regions

Southern elephant seals (Mirounga leonina), hauled out for their annual catastrophic molt (moult) on the beach at Snow Island, Antarctica, Polar Regions

Southern elephant seals (Mirounga leonina), hauled out for their annual catastrophic molt (moult) on the beach at Snow Island, Antarctica, Polar Regions

Adult black-legged kittiwakes (Rissa tridactyla) resting on ice in the Svalbard Archipelago, Barents Sea, Norway, Arctic, Europe

Adult black-legged kittiwakes (Rissa tridactyla) in flight in the Svalbard Archipelago, Barents Sea, Norway, Arctic, Europe

Brunnich's guillemot (Uria lomvia) breeding and nesting site at Cape Fanshawe in the Svalbard Archipelago, Norway, Arctic, Europe

Curious adult bull walrus (Odobenus rosmarus rosmarus) approach the ship at Moffen Island in the Svalbard Archipelago, Norway, Arctic, Europe

Curious adult bull walrus (Odobenus rosmarus rosmarus) approach the ship at Moffen Island in the Svalbard Archipelago, Norway, Arctic, Europe

Adult bull walrus (Odobenus rosmarus rosmarus) hauled out on the beach in the Svalbard Archipelago, Norway, Arctic, Europe

Schooling king angelfish (Holacanthus passer), underwater in the Galapagos Island Archipelago, UNESCO World Heritage Site, Ecuador, South America

Scenic view of Leon Dormido (Sleeping Lion) Island off San Cristobal Island in the Galapagos Islands, UNESCO World Heritage Site, Ecuador, South America

Lava and ash floes in the Galapagos Island Archipelago, UNESCO World Heritage Site, Ecuador, South America