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Crowd of tropical reef fish including scissortail sergeants and grunts, Solomon Islands, Pacific Ocean

Adult Peale's dolphin (Lagenorhynchus australis), underwater in shallow water near New Island, Falkland Islands, UK Overseas Protectorate, South America

Adult Commerson's dolphins (Cephalorhynchus commersonii), underwater at Carcass Island, Falkland Islands, UK Overseas Protectorate, South America

Adult Commerson's dolphin (Cephalorhynchus commersonii), underwater at Carcass Island, Falkland Islands, UK Overseas Protectorate, South America

Adult Peale's dolphin (Lagenorhynchus australis), underwater in shallow water near New Island, Falkland Islands, UK Overseas Protectorate, South America

Common lionfish (Pterois miles) from below, back-lit by the sun, Naama Bay, Sharm El Sheikh, Red Sea, Egypt, North Africa, Africa

Small school of Blotcheye soldierfish (White edged soldier fish) (Myripristis murdjan), Naama Bay, Sharm El Sheikh, Red Sea, Egypt, North Africa, Africa

Small school of Indian mackerel (Rastrelliger kanagurta) in shallow water, Naama Bay, Sharm El Sheikh, Red Sea, Egypt, North Africa, Africa

Red Sea Anemone fish (Amphiprion bicinctus) and Bubble anemone (Entacmaea quadricolor), Naama Bay, Sharm El Sheikh, Red Sea, Egypt, North Africa, Africa

Bluespotted stingray (Taeniura lymma), front side view, Naama Bay, Sharm El Sheikh, Red Sea, Egypt, North Africa, Africa

Spotted eagle ray (Aetobatis narinari) juvenile over sandy ocean floor, from above, Naama Bay, Sharm El Sheikh, Red Sea, Egypt, North Africa, Africa

Common lionfish (Pterois miles) from below, back-lit by the sun, Naama Bay, Sharm El Sheikh, Red Sea, Egypt, North Africa, Africa

Giant trevally (Caranx ignobilis) swimming above sea grass field, Naama Bay, Ras Mohammed National Park, Sharm El Sheikh, Red Sea, Egypt, North Africa, Africa

Green sea turtle (Chelonia mydas) resting on sea grass with on-looking scuba divers, Naama Bay, Ras Mohammed National Park, Sharm El Sheikh, Red Sea, Egypt, North Africa, Africa

Red Sea anemonefish pair (Amphiprion bicinctus) and Bubble anemone (Entacmaea quadricolor), Naama Bay, Sharm El Sheikh, Red Sea, Egypt, North Africa, Africa

Common lionfish (Pterois miles), front view, Naama Bay, Ras Mohammed National Park, Sharm El Sheikh, Red Sea, Egypt, North Africa, Africa

Ghardaqa sea star (Fromia ghardaqana), Naama Bay, Ras Mohammed National Park, Sharm El Sheikh, Red Sea, Egypt, North Africa, Africa

Shoal of sardines and scuba diver, Panagsama Beach, Moalboal, Cubu, The Visayas, Philippines, 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 Coconut Octopus (Amphioctopus marginatus), a species that gathers coconut and mollusk shells for shelter, Lembeh Strait, Sulawesi, Indonesia, Southeast Asia, Asia

Short-head sabretooth (fang) blenny (Petroscirtes breviceps), peering from a discarded plastic bottle, Gorontalo, Indonesia, Southeast Asia, Asia

Close-up head on view of a hawksbill sea turtle (Eretmochelys imbricata), Bunaken National Park, Sulawesi, Indonesia, Southeast Asia, Asia

Underside view of a giant oceanic manta ray (Mobula birostris), Dampier Strait, Raja Ampat, West Papua, Indonesia, Southeast Asia, Asia

A giant oceanic manta ray (Manta birostris) with beautiful distinct markings, topside view, Dampier Strait, Raja Ampat, West Papua, Indonesia, Southeast Asia, Asia

A bright pink purple paddle-flap scorpionfish {Rhinopias eschmeyeri) on volcanic sand, Tulamben, Bali, Indonesia, Southeast Asia, Asia

Thorny seahorse (Hippocampus histrix), side view, red and pink with yellow markings, Tulamben, Bali, Indonesia, Southeast Asia, Asia

Sea nettle jellyfish (chrysaora fuscescens), Monterey Aquarium, California, United States of America, North America

Closeup of suckers and teeth rings on the tentacles of Humboldt (Jumbo) squid (Dosidicus gigas), Gulf of California, Baja California, Mexico, North America

Humboldt (Jumbo) squid (Dosidicus gigas) underwater, Gulf of California, Baja California, Mexico, North America

Buccal cavity (mouth) and tentacles of Humboldt (Jumbo) squid (Dosidicus gigas), Gulf of California, Baja California, Mexico, North America

Humboldt (Jumbo) squid (Dosidicus gigas) swimming at night, Gulf of California, Baja California, Mexico, North America

Manta ray (Manta birostris) feeding on zooplankton by extending its cephalic lobes, Yum Balam Marine Protected Area, Quintana Roo, Mexico, North America

Whale shark (Rhincodon typus) feeding at the surface on zooplankton, mouth open, known as ram feeding, Yum Balam Marine Protected Area, Quintana Roo, Mexico, North America

Male manta ray with almost pure white ventral surface, may be a new species, for now known as Manta alfredi, Yum Balam Marine Protected Area, Quintana Roo, Mexico, North America

Eagle rays (Mobula hypostoma) common in this area and often seen feeding on zooplankton in large groups, Yum Balam Marine Protected Area, Quintana Roo, Mexico, North America

Scientist and whale shark (Rhincodon typus) feeding at the surface on zooplankton, mouth open, known as ram feeding, Yum Balam Marine Protected Area, Quintana Roo, Mexico, North America

Manta ray (Manta birostris) feeding on zooplankton by extending its cephalic lobes, Yum Balam Marine Protected Area, Quintana Roo, Mexico, North America

Scientist free diving to make a photo identification of an individual manta ray (Manta birostris), Yum Balam Marine Protected Area, Quintana Roo, Mexico, North America

Schooling Bigeye trevally (Caranx sexfasciatus) (jacks), Sipadan Island, Celebes Sea, Sabah, Malaysia, Southeast Asia, Asia

Diver swimming underwater with Bigeye trevally (Caranx sexfasciatus) (jacks) at Sipadan Island, Celebes Sea, Sabah, Malaysia, Southeast Asia, Asia

The yellow moray eel (Gymnothorax melatremus) living in an artificial reef under an oil rig near Mabul Island, Celebes Sea, Sabah, Malaysia, Southeast Asia, Asia

Juvenile cuttlefish (Sepia latimanus) less than 3 cm long shelters in the arms of a crinoid (featherstar), Celebes Sea, Sabah, Malaysia, Southeast Asia, Asia

Great barracuda (Sphyraena barracuda) (giant barracuda) can grow up to 1.8 metres long, under pier, Celebes Sea, Sabah, Malaysia, Southeast Asia, Asia

Stonefish (Synanceia verrucosa) is extremely venomous, Celebes Sea, Sabah, Malaysia, Southeast Asia, Asia

Green sea turtles (Chelonia mydas) common around Pom Pom Island, an important nesting grounds for these marine turtles, Celebes Sea, Sabah, Malaysia, Southeast Asia, Asia

Short dragonfish (sea moth) (Dragon sea moth) (Europegasus draconis), Celebes Sea, Sabah, Malaysia, Southeast Asia, Asia

False clown anenomefish (Amphiprion ocellaris) in the tentacles of its host anemone, Celebes Sea, Sabah, Malaysia, Southeast Asia, Asia

Leaf fish (Taenianotus Triacanthus), an ambush predator found amonst corals, Celebes Sea, Sabah, Malaysia, Southeast Asia, Asia

Giant Frogfish (Antennarius commersonii) can grow to 30 cm and is commonly encountered by divers, Celebes Sea, Sabah, Malaysia, Southeast Asia, Asia

The popcorn shrimp (Periclimenes kororensis) in fungid coral (Heliofungia actiniformis) (mushroom coral), Celebes Sea, Sabah, Malaysia, Southeast Asia, Asia

Burrowing snake eel (Pisodonophis cancrivoris) in the sand, Celebes Sea, Sabah, Malaysia, Southeast Asia, Asia

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

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

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

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

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

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

Scavenging sea stars and a humpback shrimp (Pandalus hypsinotus) working on the remains of a rock crab, Canada, North America