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Humpback whale (Megaptera novaeangliae), underwater, Hawaii, United States of America, Pacific, North America

Bigfin reef squid (Sepioteuthis lessoniana) tending eggs which have been laid along a buoy line, taken at dusk, Lembeh Strait, Indonesia, Southeast Asia, Asia

The reef manta ray (Manta alfredi) with yellow pilot fish in front of its mouth, Dampier Strait, Raja Ampat, West Papua, Indonesia, Southeast Asia, Asia

Diver swimming underwater along the wall at Sipadan Island, Celebes Sea, Sabah, Malaysia, Southeast Asia, Asia

Galapagos penguin (Spheniscus mendiculus) underwater at Isabela Island, Galapagos Islands, Ecuador, South 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

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

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

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

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

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

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

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

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

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

A green sea turtle (Chelonia mydas) makes its way to the surface off Maui, Hawaii, United States of America, Pacific, North America

Three-spot damsel fish (Dascyllus trimaculatus), magnificent anemone (Heteractis magnifica) close-up, Ras Mohammed National Park, off Sharm el-Sheikh, Sinai, Red Sea, Egypt, North Africa, Africa

Red sea anemone fish (Amphiprion bicinctus) and magnificent anemone (Heteractis magnifica), Ras Mohammed National Park, off Sharm el-Sheikh, Sinai, Red Sea, Egypt, North Africa, Africa

Schooling goldspot emperor or bream (Gnathodentex aureolineatus), off the island of Yap, Micronesia, Pacific

A sea star shimp (Periclimenes soror), swims through a forest of spines on the back of a crown-of-thorns starfish, Micronesia, Pacific

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

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

A close-up of the underside of the crown-of-thorns starfish (Acanthaster planci), United States of America, North America

Whitetip reef sharks (Triaenodon obesus) resting on the ocean floor, Hawaii, United States of America, Pacific, North America

A humpback whale (Megaptera novaeangliae) glides through the blue waters of Hawaii, United States of America, Pacific, North America

Colourful healthy hard and soft coral reef with long nosed butterflyfish (Forcipiger flavissimus), Matangi Island, Vanua Levu, Fiji, Pacific

The oriental flying gurnard, Dactylopterus orientalis, Hawaii, United States of America, Pacific, North America

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

A plumed scorpionfish (Scorpaena grandicornis), off Singer Island in Florida, United States of America, North America

A gathering of robe hem hypselodoris nudibranchs (Hypselodoris apolegma), Komodo, Indonesia, Southeast Asia, Asia

Spotted eagle ray (Aetobatus narinari) underwater, Leon Dormido Island, San Cristobal Island, Galapagos Islands, Ecuador, South America

Adult whitetip reef shark (Triaenodon obesus) with cleaner wrasse, Roroia, Tuamotus, French Polynesia, South Pacific, Pacific

Lion's mane jellyfish, Cyanea capillata, is the largest known species of jellyfish. Petersburg, Southeast Alaska, United States of America

Oceanic manta ray (Manta birostris) feeding near the surface, Honda Bay, Palawan, The Philippines, Southeast Asia, Asia

A group of snorkellers observing spinetail devil rays (Mobula mobular) engaged in sexual courtship in Honda Bay, Palawan, The Philippines, Southeast Asia, Asia

Snorkellers observing spinetail devil rays (Mobula mobular) engaged in sexual courtship in Honda Bay, Palawan, The Philippines, Southeast Asia, Asia