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    Plankton. Coloured scanning electron micrograph (SEM) of plankton containing mainly Ceratium dinoflagellates. A few diatoms are also present. Dinoflagellates are unicellular protozoans — Stock Photo
    Plankton. Coloured scanning electron micrograph (SEM) of plankton containing mainly Ceratium dinoflagellates. A few diatoms are also present. Dinoflagellates are unicellular protozoans
    Bumblebee collecting nectar from yellow flower, close-up — Stock Photo
    Bumblebee collecting nectar from yellow flower, close-up
    House dust mite — Stock Photo
    House dust mite
    Ancient ammonite animal on black background, computer illustration. — Stock Photo
    Ancient ammonite animal on black background, computer illustration.
    Spiral ammonite fossil on black background. — Stock Photo
    Spiral ammonite fossil on black background.
    Close-up of hoverfly from dorsal view on dried wildflower. — Stock Photo
    Close-up of hoverfly from dorsal view on dried wildflower.
    Close-up of camouflaged orb weaver spider on dried wild plant. — Stock Photo
    Close-up of camouflaged orb weaver spider on dried wild plant.
    Dust mite on skin surface — Stock Photo
    Dust mite on skin surface
    France, Les Moutiers-en-Retz, 44, barnacles hanging on a beacon stranded on the beach after a storm. — Stock Photo
    France, Les Moutiers-en-Retz, 44, barnacles hanging on a beacon stranded on the beach after a storm.
    France, Normandy, grey schrimps on a fish market — Stock Photo
    France, Normandy, grey schrimps on a fish market
    Close-up of head and antennas of honey bee. — Stock Photo
    Close-up of head and antennas of honey bee.
    Colorful soft corals on reef — Stock Photo
    Colorful soft corals on reef
    Soft corals and fish on reef — Stock Photo
    Soft corals and fish on reef
    Close-up of red orb weaver spider at center of web. — Stock Photo
    Close-up of red orb weaver spider at center of web.
    Leaf beetle with laid eggs on blade of grass. — Stock Photo
    Leaf beetle with laid eggs on blade of grass.
    Close-up of chestnut weevil grub portrait. — Stock Photo
    Close-up of chestnut weevil grub portrait.
    Trichina spiralis roundworm — Stock Photo
    Trichina spiralis roundworm
    Hydatid disease in liver, cystic echinococcosis, Computer illustration — Stock Photo
    Hydatid disease in liver, cystic echinococcosis, Computer illustration
    Close-up of ladybug larva in pupa stage on stem. — Stock Photo
    Close-up of ladybug larva in pupa stage on stem.
    Close-up of orange legged furrow bee head and antennas. — Stock Photo
    Close-up of orange legged furrow bee head and antennas.
    Head louse on white background, digital illustration. — Stock Photo
    Head louse on white background, digital illustration.
    Two girls under a beach shower — Stock Photo
    Two girls under a beach shower
    Traditional fresh fish market — Stock Photo
    Traditional fresh fish market
    Close-up of bright green blister beetle portrait on black background. — Stock Photo
    Close-up of bright green blister beetle portrait on black background.
    Close-up of hymenopteran insect hanging on plant stem. — Stock Photo
    Close-up of hymenopteran insect hanging on plant stem.
    Close-up of ladybug larva in pupa stage on stem. — Stock Photo
    Close-up of ladybug larva in pupa stage on stem.
    Close-up shot of group of ants carrying dead caterpillar — Stock Photo
    Close-up shot of group of ants carrying dead caterpillar
    Eastern kingbird perched on barbed wire and catching grasshopper. — Stock Photo
    Eastern kingbird perched on barbed wire and catching grasshopper.
    Close-up of tachinid fly perched on wild plant. — Stock Photo
    Close-up of tachinid fly perched on wild plant.
    Giant anemone, fuerteventura canary islands — Stock Photo
    Giant anemone, fuerteventura canary islands
    Liver fluke. Computer illustration of adult liver fluke (Fasciola hepatica), parasite of sheep, cattle and humans. Humans ingest fluke larvae by eating infested vegetation — Stock Photo
    Liver fluke. Computer illustration of adult liver fluke (Fasciola hepatica), parasite of sheep, cattle and humans. Humans ingest fluke larvae by eating infested vegetation
    Echinococcus granulosus hydatid cyst, computer illustration — Stock Photo
    Echinococcus granulosus hydatid cyst, computer illustration
    A piece of a boiled octopus — Stock Photo
    A piece of a boiled octopus
    Close-up of dragonfly perched on dried plant outdoors. — Stock Photo
    Close-up of dragonfly perched on dried plant outdoors.
    Cuttlefish aquarium in Lisbon, Portugal — Stock Photo
    Cuttlefish aquarium in Lisbon, Portugal
    Black leaf beetle on piece of lichen-covered branch. — Stock Photo
    Black leaf beetle on piece of lichen-covered branch.
    Close-up of exotic moth perched on branch in tropical forest. — Stock Photo
    Close-up of exotic moth perched on branch in tropical forest.
    Close-up of heat butterfly collecting nectar on wild plant. — Stock Photo
    Close-up of heat butterfly collecting nectar on wild plant.
    Close-up of click beetle frontal portrait with antennas. — Stock Photo
    Close-up of click beetle frontal portrait with antennas.
    Caenorhabditis elegans parasite worm, colored scanning electron micrograph. — Stock Photo
    Caenorhabditis elegans parasite worm, colored scanning electron micrograph.
    Chef preparing a crab. — Stock Photo
    Chef preparing a crab.
    Close-up of halictid bee perched on wild plant. — Stock Photo
    Close-up of halictid bee perched on wild plant.
    Trichina spiralis roundworm — Stock Photo
    Trichina spiralis roundworm
    Girl holding shell to her brother's ear on beach — Stock Photo
    Girl holding shell to her brother's ear on beach
    Close-up of dew covered tiny fly on frozen leaf covered with ice crystals. — Stock Photo
    Close-up of dew covered tiny fly on frozen leaf covered with ice crystals.
    Hydatid disease in liver, cystic echinococcosis, Computer illustration — Stock Photo
    Hydatid disease in liver, cystic echinococcosis, Computer illustration
    Digital illustration of nit egg of human head louse attached to human hair. — Stock Photo
    Digital illustration of nit egg of human head louse attached to human hair.
    Hydatid disease in liver, cystic echinococcosis, Computer illustration — Stock Photo
    Hydatid disease in liver, cystic echinococcosis, Computer illustration
    Male praying mantis eating — Stock Photo
    Male praying mantis eating
    Close-up of exotic moth perched on branch in tropical forest. — Stock Photo
    Close-up of exotic moth perched on branch in tropical forest.
    Six spot burnet moth sitting on Fullers teasel. — Stock Photo
    Six spot burnet moth sitting on Fullers teasel.
    Closeup Of Praying Mantis — Stock Photo
    Closeup Of Praying Mantis
    Mosquito of family Culicidae — Stock Photo
    Mosquito of family Culicidae
    Honey bee on honeycomb — Stock Photo
    Honey bee on honeycomb
    Teenage girl looking at crawling crab near pool. — Stock Photo
    Teenage girl looking at crawling crab near pool.
    Closeup Of Praying Mantis — Stock Photo
    Closeup Of Praying Mantis
    Close-up of thread waisted wasp sitting on plant branch. — Stock Photo
    Close-up of thread waisted wasp sitting on plant branch.
    Hydatid disease in liver, cystic echinococcosis, Computer illustration — Stock Photo
    Hydatid disease in liver, cystic echinococcosis, Computer illustration
    Head louse on human hair, digital illustration. — Stock Photo
    Head louse on human hair, digital illustration.
    Blue dasher dragonfly sitting on plant twig, close-up. — Stock Photo
    Blue dasher dragonfly sitting on plant twig, close-up.