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Juvenile alligator in swampland (bayou) at Jean Lafitte National Historical Park and Preserve, south of New Orleans, Louisiana, USA

A Coconut Octopus (Amphioctopus marginatus), a species that gathers coconut and mollusk shells for shelter, Lembeh Strait, Sulawesi, Indonesia, Southeast Asia, Asia

A Coconut Octopus (Amphioctopus marginatus), a species that gathers coconut and mollusk shells for shelter, Lembeh Strait, Sulawesi, Indonesia, Southeast Asia, Asia

A harlequin swimming crab (Lissocarcinus laevis), lives with this sea anemone in symbiosis, Philippines, Southeast Asia, Asia

Clown anemonefish (Amphiprion percula), in anemone (Heteractis magnifica), Philippines, Southeast Asia, Asia

Tropical coral reef scene with a large table coral (Acropora pharaonis), Ras Mohammed National Park, off Sharm el-Sheikh, Sinai, Red Sea, Egypt, North Africa, Africa

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

Florida manatees (Trichechus manatus latirostris), gather at Three Sisters Springs in Crystal River, Florida, United States of America, North America

Giant hermit crab (Petrochirus diogenes), off Singer Island, Florida, United States of America, 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

Hairy squat lobster (Lauriea siagiani) amongst a pink and orange colored sponge, Tulamben, Bali, Indonesia, Southeast Asia, Asia

A Coconut Octopus (Amphioctopus marginatus), a species that gathers coconut and mollusk shells for shelter, Lembeh Strait, Sulawesi, Indonesia, Southeast Asia, Asia

Blackmouth sea cucumber (Pearsonothuria graeffei) on coral reef, Ras Mohammed National Park, Sharm Eel-Sheikh, Red Sea, Egypt, North Africa, Africa

Tropical coral reef scene, Ras Mohammed National Park, off Sharm el-Sheikh, Sinai, Red Sea, Egypt, North Africa, Africa

Coral reef scene, shoal of glassfish (Arapriacanthus ransonneti), Ras Mohammed National Park, Sharm el-Sheikh, Red Sea, Egypt, North Africa, Africa

Silhouette of two scuba divers above Table coral, Ras Mohammed National Park, Sharm el-Sheikh, Red Sea, Egypt, North Africa, Africa

Giant sea fan coral (Gorgonian fan coral) (Annella mollis), Ras Mohammed National Park, off Sharm el-Sheikh, Sinai, Red Sea, Egypt, North Africa, Africa

Silhouette of two scuba divers above coral reef scene, Ras Mohammed National Park, Sharm el-Sheikh, Red Sea, Egypt, North Africa, Africa

Tropical coral reef scene, Ras Mohammed National Park, off Sharm el-Sheikh, Sinai, Red Sea, Egypt, North Africa, Africa

Silhouette of three scuba divers above giant sea fan (Annella mollis), Ras Mohammed National Park, Red Sea, Egypt, North Africa, Africa

Silhouette of two scuba divers above coral reef, Ras Mohammed National Park, Red Sea, Egypt, North Africa, Africa

Silhouette of three scuba divers above coral reef, Ras Mohammed National Park, Red Sea, Egypt, North Africa, Africa

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.

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.

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 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.

Adult Peale's Dolphin (Lagenorhynchus australis), bow-riding near New Island in the Falkland Islands, South America

An adult bull killer whale (Orcinus orca) surfacing in Johnstone Strait, British Columbia, Canada, Pacific Ocean, North America

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

Spotted eagle rays (Aetobatus narinari) underwater at Leon Dormido Island off San Cristobal Island, Galapagos, UNESCO World Heritage Site, Ecuador, South America

Spotted eagle ray (Aetobatus narinari) underwater at Leon Dormido Island off San Cristobal Island, Galapagos, UNESCO World Heritage Site, Ecuador, South America

Looking down into the Los Peces fresh water cave near Playa Giron, Matanzas Province, Cuba, West Indies, Caribbean, Central America

Flying fish from the family Exocoetidae take flight as the ship flushes them just off Ascension Island in the southern tropical Atlantic Ocean, South Atlantic Ocean

Adult Commerson's dolphin (Cephalorhynchus commersonii), surfacing in Stanley Harbor in the Falkland Islands, South America

Adult Weddell seal (Leptonychotes weddellii) hauled out on ice near the Antarctic Peninsula, Southern Ocean, Polar Regions

Adult green sea turtles (Chelonia mydas agassizii) underwater off the west side of Isabela, Galapagos Islands, UNESCO World Heritage Site, Ecuador, South America

An adult American Eel (Anguilla rostrata) prowls along the edge of the Morrison Springs cavern at 85 feet deep watching over the adolescent eels in the clear freshwaters of the state park near Red Bay, Florida.

Pink anemonefish (Amphiprion perideraion) guard their anemone on a coral reef in the South Pacific ocean near Tavarua Island off the coast of Veti Levu, Fiji.

A Spotfin Lionfish flares it's dorsel spines and fins to display threat while laying on a colorful reef at night in the warm clear waters of Papua New Guinea. Lionfish float fearlessly around the reef as they are also one of the most venomous residents there.

Pink Anemonefish (Amphiprion perideraion) appear to be on lookout to protect their purple anemone home in the clear and warm ocean waters of Papua New Guinea.

A Neon Goby (Gobiosoma oceanops) takes a look outside its hole in the live boulder star coral (Montastraea annularis), Key Largo, Florida.

Schooling scalefin anthias fish (Pseudanthias squamipinnis) and beautiful soft corals of Beqa Lagoon, Fiji.

A school of orange basslets (Pseudanthias squamipinnis) on a healthy Fijian reef full of hard and soft corals, Fiji.