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A moon jellyfish catches the sunlight, Antigua, Leeward Islands, West Indies, Caribbean, Central America

Curious flightless cormorant (Phalacrocorax harrisi) underwater at Tagus Cove, Isabela Island, Galapagos Islands, Ecuador, South America

Curious flightless cormorant (Phalacrocorax harrisi) underwater at Tagus Cove, Isabela Island, Galapagos Islands, Ecuador, South America

Curious flightless cormorant (Phalacrocorax harrisi) underwater at Tagus Cove, Isabela Island, Galapagos Islands, Ecuador, South America

Adult green sea turtle (Chelonia mydas) feeding underwater near Isabela Island, Galapagos Islands, Ecuador, South America

Adult green sea turtle (Chelonia mydas) underwater near Rabida Island, Galapagos Islands, Ecuador, South America

Group of spotted eagle rays (Aetobatis narinari), Oahu, Hawaii, United States of America, Pacific, North America

A young humpback whale (Megaptera novaeangliae), underwater, Hawaii, United States of America, Pacific, North America

Almaco jack (Seriola rivoliana), in the pen at a fish farm off The Big Island, Hawaii, United States of America, Pacific, North America

Dense swarms of juvenile squat lobster (Munida gregaria) off Akaroa, South Island, New Zealand, Pacific

Dense swarms of juvenile squat lobster (Munida gregaria) off Akaroa, South Island, New Zealand, Pacific

Antarctic fur seal (Arctocephalus gazella) pup underwater in Stromness Bay, South Georgia, South Atlantic Ocean, Polar Regions

A painted spiny lobster (Panulirus versicolor) (Painted crayfish), Philippines, Southeast Asia, Asia

Close-up view of a three color parrotfish (Scarus tricolor), coming in for a bite of hard coral, Fiji, South Pacific, Pacific

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

A cleaner shrimp (Lysmata amboinensis), inspects the teeth of an undulated moray eel, Hawaii, United States of America, Pacific, North America

A young Commerson's frogfish (Antennarius commerson), just three inches long, Hawaii, United States of America, Pacific, North America

The shell of Hawaiian reef lobster (Enoplometopus occidentalis), covered in algae and parasitic barnacles, Hawaii, United States of America, Pacific, North America

Schooling threadfin butterflyfish (Chaetodon auriga), in Rarotonga Lagoon, The Cook Islands, South Pacific, Pacific

A white-v hydroid crab (Hyastenus borradailei), feeding on a colony of green tube coral, Fiji, South Pacific, Pacific

A longjaw squirrelfish (Sargocentron spiniferum), and a school of bigscale soldierfish (Myripristis berndti), Hawaii, United States of America, Pacific, North America

A pair of Atlantic bottlenose dolphins (Tursiops truncatus), in the Bahama Banks, Bahamas, Central America

Atlantic bottlenose dolphin (Tursiops truncatus), Curacao, Netherlands Antilles, Caribbean, Central America

Sea star shimp (Periclimenes soror), on a crown-of-thorns starfish (Acanthaster planci), Yap, Micronesia, Pacific

Three squat anemone shrimp (Thor amboinensis), at the base of a tube anemone, Philippines, Southeast Asia, Asia

Bubble coral shrimp (Vir philippinensis) on bubble coral (Plerogyra sp.), Philippines, Southeast Asia, Asia

A blackspotted puffer (Arothron nigropunctatus) curled up on the reef for the night, Philippines, Southeast Asia, Asia

A bluestreak cleaner wrasse searching the mouth of a clown sweetlips for parasites, Yap, Micronesia, Pacific

Close-up of a devil scorpionfish (Scorpaenopsis diabolus), Hawaii, United States of America, Pacific, North America

Mantle detail on a spondylus (Thorny Oyster shell) (Spondylus varians), Philippines, Southeast Asia, Asia

A mother and juvenile Atlantic Bottlenose Dolphin (Tursiops truncatus), in the Bahama Banks, Bahamas, Central America

Endangered Florida manatee (Trichechus manatus latirostris), at Three Sisters Spring in Crystal River, Florida, United States of America, North America

A hawksbill turtle (Eretmochelys imbricata), swims over a reef in the Pacific Ocean, Philippines, Southeast Asia, Asia

Green sea turtle getting its shell cleaned by goldring surgeonfish off Maui, Hawaii, United States of America, Pacific, North America

A female green sea turtle (Chelonia mydas), and schooling bigeye jacks (Caranx sexfasciatus), Malaysia, Southeast Asia, Asia

The spotted porcupinefish (Diodon hystrix), Hawaii, United States of America, Pacific, North America

The Kona crab (Ranina ranina) (Spanner crab), Maui, Hawaii, United States of America, Pacific, North America

A garibaldi (Hypsypops rubicundus) in a forest of giant kelp off Catalina Island, California, United States of America, North America

The graceful decorator crab (Oregonia gracilis), attaches organisms to its back, British Columbia, Canada, North America

An inflated guineafowl pufferfish (Arothron meleagris), on a drop off in Fiji, South Pacific, Pacific

Freckled hawkfish (Paracirrhites forsteri) a reef fish that feeds on small fish and shrimps, Matangi Island, Vanua Levu, Fiji, Pacific

Pink anenomefish (Amphoprion perideraion) dominant female, lives in symbiotic association with its host anemone, Matangi Island, Vanua Levu, Fiji, Pacific

Almaco jack (Seriola rivoliana), in the pen at a fish farm off The Big Island, Hawaii, United States of America, Pacific, North America

A hawksbill sea turtle (Eretmochelys imbricata), in a colorful overhang on a reef in the Koro Sea, Fiji, South Pacific, Pacific

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

The male oval squid (Sepioteuthis lessoniana), can reach 14 inches in length, Hawaii, United States of America, Pacific, North America

View showing the suckers on a day octopus (Octopus cyanea), Hawaii, United States of America, Pacific, North America

Several green sea turtles (Chelonia mydas) gather at a cleaning station off West Maui, Hawaii, United States of America, Pacific, North America

The male oval squid (Sepioteuthis lessoniana), can reach 14 inches in length, Hawaii, United States of America, Pacific, North America

Day octopus (Octopus cyanea), in mid-water, Hawaii, United States of America, Pacific, North America

Day octopus (Octopus cyanea), in mid-water, Hawaii, United States of America, Pacific, North America

The porcelain crab (Neopetrolisthes maculatus), commensal in sea anemones, Philippines, Southeast Asia, Asia

Gorgonian coral in the background with Arnaz's damselfish (Chrysiptera arnazae), Philippines, Southeast Asia, Asia

Hinge beak shrimp (Hinge beak prawn) (Rhynchocinetes sp.) emerges to feed at night, Matangi Island, Vanua Levu, Fiji, Pacific

Dusky anenomefish (Amphiprion melanomas) dominant female, lives in symbiotic association with its host anemone, Matangi Island, Vanua Levu, Fiji, Pacific

Green sea turtles (Chelonia mydas), gather at a cleaning station off West Maui, Hawaii, United States of America, Pacific, North America

Atlantic bottlenose dolphin (Tursiops truncatus), in training using only echolocation, Netherlands Antilles, Caribbean, Central America

Humpback whales (Megaptera novaeangliae), underwater off the coast of Hawaii, United States of America, Pacific, North America

A great white shark (Carcharodon carcharias), breaks the surface off Guadalupe Island, Mexico, North America

Grey reef sharks (Carcharhinus amblyrhynchos), at a controlled feeding of the island of Yap, Micronesia, Pacific

A Galapagos shark (Carcharhinus galapagensis), breaching the surface, Hawaii, United States of America, Pacific, North America

A nurse shark (Ginglymostoma cirratum) pictured with a school of juvenile jacks. Bahamas, Central America

A female blacktip reef shark (Carcharhinus melanopterus), off the island of Yap, Micronesia, Pacific

Green sea turtle (Chelonia mydas) underwater with snorkeler, Maui, Hawaii, United States of America, Pacific

The critically endangered hawksbill turtle (Eretmochelys imbricata) above coral reef, Ras Mohammed National Park, off Sharm el-Sheikh, Sinai, Red Sea, Egypt, North Africa, Africa

Common giant clam (Tridacna maxima) macro, Ras Mohammed National Park, off Sharm el-Sheikh, Sinai, Red Sea, Egypt, North Africa, Africa

Bluespine unicorn fish (Naso unicornis) close-up, Ras Mohammed National Park, off Sharm el-Sheikh, Sinai, Red Sea, Egypt, North Africa, Africa

Bluespotted Stingray (taeniura lymma) close-up top view, Naama Bay, off Sharm el-Sheikh, Sinai, Red Sea, Egypt, North Africa, Africa

Sohal surgeonfish (Acanthurus sohal) in shallow water, low angle view, Ras Mohammed National Park, Red Sea, Egypt, North Africa, Africa