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A pair of manatees swimming in formation with the lead manatee in the crystal clear freshwater of the Fanning Springs inlet to the Suwannee River, Florida.

A Crocodilefish lies motionless on the sandy bottom at night in Papua New Guinea employing camouflauge while laying in wait for an unsuspecting fish.

A Peninsula Cooter turtle (Pseudemys peninsularis) looking up and positioned on the sandy bottom of the Morrison Springs cavern at 80 feet deep in the fresh clearwaters of the State Park near Red Bay, Florida.

A Map Turtle (Graptemys geographica) surfaces for air in the clear blue waters of Morrison Springs, a state park in Northwest Florida. The calm glassy water reflects the bright colors of the turtle with it's head above the surface but it's body inches below the surface.

A Spotted Trunkfish (Lactophrys bilcaudalis) swims over an algae covered coral reef in the Atlantic Ocean off the coast of Key Largo, Florida.

A Spotted Moray Eel (Gymnothorax moringa) displays an open mouth as it protrudes it's head just outside a hole in a coral reef in the Atlantic Ocean off the coast of Key Largo, Florida.

A French Angelfish (Pomacanthus paru) swims up close to a Blue Striped Grunt (Haemulon sciurus) under a coral reef ledge in the Atlantic Ocean off the coast of Key Largo, Florida.

A large spotted pufferfish swims in for a closer look at the photogrpher's camera off the coast of Key Largo, Florida.

Hawksbill sea turtle (Eretmochelys imbricata), a critically endangered species, frontal view, South Ari Atoll, Maldives.

Head on view showing cerata on an aeolid nudibranch, Pteraeolidia ianthina, in Komodo National Park, Indonesia.

Close-up view of a green turtle (Chelonia mydas) resting on a reef top in Komodo National Park, Indonesia.

Yellow-Ridged Ceratosoma (Ceratosoma flavicostatum) nudibranch, head on view, Komodo National Park, Indonesia.

Portrait of an American saltwater crocodile on the surface of a mangrove at sunset with mouth wide open, Jardines De La Reina, Cuba.

Head-on portrait of purple anthias (Pseudanthias tuka) in black water, Manado, North Sulawesi, Indonesia.

Whale shark swimming under a boat, with sharp sunrays cutting through the water, Cenderawasih Bay, West Papua, Indonesia.

American saltwater crocodile (Crocodylus acutus) in mangrove with mouth open showing teeth, Jardines De La Reina, Cuba.

An oceanic blacktip shark swims by with remora in tow, Aliwal Shoal, Umkomaas, KwaZulu-Natal, South Africa.

Young adult bull southern elephant seal (Mirounga leonina) holding young pup's head underwater trying to kill it, South Georgia Island, Southern Ocean

Young adult bull southern elephant seal (Mirounga leonina) holding young pup's head underwater trying to kill it, South Georgia Island, Southern Ocean

Grey seal (Halichoerus grypus), Farne Islands, Seahouses, Northumberland, England, United Kingdom, Europe

Wild ponies grazing on St. Davids Head in spring sunshine, Pembrokeshire National Park, Wales, United Kingdom, Europe

Swift fox (Vulpes velox) kit, Pawnee National Grassland, Colorado, United States of America, North America

Adult San Esteban spiny-tailed iguana (Ctenosaura conspicuosa), endemic to Isla San Esteban, Baja California, Mexico, North America

Adult crab-eating fox (Cerdocyon thous), head detail at Pousada Piuval, Mato Grosso, Pantanal, Brazil, South America

Gray wolf (Canis lupus) in captivity, near Bozeman, Montana, United States of America, North America

Galapagos Giant Tortoise (Chelonoidis chathamensis), can live for over 100 years, San Cristobal island, Galapagos, UNESCO World Heritage Site, Ecuador, South America

Galapagos Giant Tortoise (Chelonoidis chathamensis), can live for over 100 years, San Cristobal island, Galapagos, UNESCO World Heritage Site, Ecuador, South America

Adult brown pelican (Pelecanus occidentalis), plunge diving for fish, Isla Carmen, Baja California Sur, Mexico, North America

Long-tailed macaque (Macaca fascicularis), Bako National Park, Sarawak, Borneo, Malaysia, Southeast Asia, Asia

Mother and infant Bornean orangutan (Pongo pygmaeus), Semenggoh Rehabilitation Center, Sarawak, Borneo, Malaysia, Southeast Asia, Asia

Long-tailed macaque (Macaca fascicularis), Bako National Park, Sarawak, Borneo, Malaysia, Southeast Asia, Asia

Wild saltwater crocodile (Crocodylus porosus) on the banks of the Hunter River, Mitchell River National Park, Kimberley, Western Australia, Australia, Pacific

An adult mudskipper, subfamily Oxudercinae, in mud burrow on the mud flats of Vansittart Bay, Kimberley, Western Australia, Australia, Pacific

Wild saltwater crocodile (Crocodylus porosus) head detail in porous creek on the Hunter River, Mitchell River National Park, Kimberley, Western Australia, Australia, Pacific

An adult mudskipper, subfamily Oxudercinae, in mud burrow on the mud flats of Vansittart Bay, Kimberley, Western Australia, Australia, Pacific

An adult mudskipper, subfamily Oxudercinae, in mud burrow on the mud flats of Vansittart Bay, Kimberley, Western Australia, Australia, Pacific