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    A crocodile, Crocodylus niloticus, lying on the side of a waterhole covered in algae — Stock Photo
    A crocodile, Crocodylus niloticus, lying on the side of a waterhole covered in algae
    Entamoeba histolytica engulfing red blood cells — Stock Photo
    Entamoeba histolytica engulfing red blood cells
    Sea lion playing under oil rig — Stock Photo
    Sea lion playing under oil rig
    Gray Angelfish swimming by corals — Stock Photo
    Gray Angelfish swimming by corals
    Leopard moray eel with opened mouth — Stock Photo
    Leopard moray eel with opened mouth
    Manta rays swimming over sea bottom — Stock Photo
    Manta rays swimming over sea bottom
    Longlure frogfish yawning — Stock Photo
    Longlure frogfish yawning
    Whale shark feeding on fish — Stock Photo
    Whale shark feeding on fish
    Frog swimming in pond — Stock Photo
    Frog swimming in pond
    King penguin standing at wet shore of Salisbury Plain, South Georgia Island, Southern Atlantic Ocean — Stock Photo
    King penguin standing at wet shore of Salisbury Plain, South Georgia Island, Southern Atlantic Ocean
    Jorunna funebris nudibranch eggs — Stock Photo
    Jorunna funebris nudibranch eggs
    Entamoeba gingivalis parasitic pathogen single-celled protozoan, amoeba in oral cavity, digital illustration. — Stock Photo
    Entamoeba gingivalis parasitic pathogen single-celled protozoan, amoeba in oral cavity, digital illustration.
    Stoplight parrotfish headshot — Stock Photo
    Stoplight parrotfish headshot
    Blue Christmas tree worm — Stock Photo
    Blue Christmas tree worm
    Salmon jumping up at falls of Fraser river in British Columbia, Canada — Stock Photo
    Salmon jumping up at falls of Fraser river in British Columbia, Canada
    School of sergeant major fish — Stock Photo
    School of sergeant major fish
    Nudibranch feeding on algae — Stock Photo
    Nudibranch feeding on algae
    Yellow Seahorse closeup shot — Stock Photo
    Yellow Seahorse closeup shot
    Diver with a juvenile tiger shark, Honokohau harbor, Hawaii, America, USA — Stock Photo
    Diver with a juvenile tiger shark, Honokohau harbor, Hawaii, America, USA
    Floating latticed butterflyfish — Stock Photo
    Floating latticed butterflyfish
    Soft coral colonies growing on reef — Stock Photo
    Soft coral colonies growing on reef
    Seaweed growing under water — Stock Photo
    Seaweed growing under water
    Closeup view of majestic betta fish on black background — Stock Photo
    Closeup view of majestic betta fish on black background
    Free diver swimming underwater with turtle in ocean — Stock Photo
    Free diver swimming underwater with turtle in ocean
    Beautiful colorful Betta fish swimming in aquarium on dark background, close view — Stock Photo
    Beautiful colorful Betta fish swimming in aquarium on dark background, close view
    Close-up of parasitic amoeba in human intestine, digital artwork. — Stock Photo
    Close-up of parasitic amoeba in human intestine, digital artwork.
    Coriocella nigra sea snail — Stock Photo
    Coriocella nigra sea snail
    False clownfish in anemone tentacles — Stock Photo
    False clownfish in anemone tentacles
    A Bifurcated flatworm (Pseudoceros bifurcus) on hard coral, Madagascar. — Stock Photo
    A Bifurcated flatworm (Pseudoceros bifurcus) on hard coral, Madagascar.
    Scenic view of sea turtle swimming underwater to sunlight — Stock Photo
    Scenic view of sea turtle swimming underwater to sunlight
    Sharptail eel searching for food — Stock Photo
    Sharptail eel searching for food
    Red and white striped raspberry crab — Stock Photo
    Red and white striped raspberry crab
    Sandhill crane flying in blue sky — Stock Photo
    Sandhill crane flying in blue sky
    Southern stingray laying covered in sand — Stock Photo
    Southern stingray laying covered in sand
    Amoeba shell. Coloured scanning electron micrograph (SEM) of a shell from a Euglypha sp. amoeba. — Stock Photo
    Amoeba shell. Coloured scanning electron micrograph (SEM) of a shell from a Euglypha sp. amoeba.
    Sockeye salmon jump — Stock Photo
    Sockeye salmon jump
    Devil scorpionfish closeup shot — Stock Photo
    Devil scorpionfish closeup shot
    Galapagos Green Sea Turtle — Stock Photo
    Galapagos Green Sea Turtle
    The Hawaiian Dascyllus (Dascyllus albisella) is a Hawaiian endemic fish species. This example was photographed under water while scuba diving near Maui; Molokini Crater, Maui, Hawaii, United States of America — Stock Photo
    The Hawaiian Dascyllus (Dascyllus albisella) is a Hawaiian endemic fish species. This example was photographed under water while scuba diving near Maui; Molokini Crater, Maui, Hawaii, United States of America
    Underwater view of fish in the red sea — Stock Photo
    Underwater view of fish in the red sea
    Emperor penguin striding beside grounded iceberg, Snow Hill Island, Antarctic Peninsula — Stock Photo
    Emperor penguin striding beside grounded iceberg, Snow Hill Island, Antarctic Peninsula
    Sea Anemone On Floor — Stock Photo
    Sea Anemone On Floor
    Eagle ray in blue water — Stock Photo
    Eagle ray in blue water
    Blacktip reef shark under water — Stock Photo
    Blacktip reef shark under water
    Anemone hermit crab on coral — Stock Photo
    Anemone hermit crab on coral
    Red starfish in Raja Ampat — Stock Photo
    Red starfish in Raja Ampat
    Smooth hammerhead shark swimming in ocean — Stock Photo
    Smooth hammerhead shark swimming in ocean
    Whale shark tail near surface — Stock Photo
    Whale shark tail near surface
    Surrounded by patches of Rice Coral (Montipora capitata), a Red Slate Pencil Urchin (Heterocentrotus mamillatus) and a Needle-spined (Urchin Echinostrephus aciculatus) rest on Molokini Backwall which is located offshore of Maui, Hawaii, USA; Molokini — Stock Photo
    Surrounded by patches of Rice Coral (Montipora capitata), a Red Slate Pencil Urchin (Heterocentrotus mamillatus) and a Needle-spined (Urchin Echinostrephus aciculatus) rest on Molokini Backwall which is located offshore of Maui, Hawaii, USA; Molokini
    Green turtle swimming in blue water — Stock Photo
    Green turtle swimming in blue water
    Young Green sea turtle (Chelonia mydas) swimming down to reef after taking a break at the surface; Makena, Maui, Hawaii, United States of America — Stock Photo
    Young Green sea turtle (Chelonia mydas) swimming down to reef after taking a break at the surface; Makena, Maui, Hawaii, United States of America
    Closeup view of majestic betta fish on black background — Stock Photo
    Closeup view of majestic betta fish on black background
    Common lionfish swimming at Beqa Lagoon — Stock Photo
    Common lionfish swimming at Beqa Lagoon
    Blue fish swimming near corals — Stock Photo
    Blue fish swimming near corals
    Gorgonian sea fan and tiger cowrie — Stock Photo
    Gorgonian sea fan and tiger cowrie
    Pederson shrimp closeup shot — Stock Photo
    Pederson shrimp closeup shot
    Pink Skunk Clownfish — Stock Photo
    Pink Skunk Clownfish
    Chromodoris kuniei nudibranch — Stock Photo
    Chromodoris kuniei nudibranch
    Florida manatee swimming underwater in Crystal River, Florida, USA — Stock Photo
    Florida manatee swimming underwater in Crystal River, Florida, USA
    Colorful sea apple on reef — Stock Photo
    Colorful sea apple on reef