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    Obelia hydrozoan medusa. Light micrograph (LM) of a medusa (young polyp) from the Obelia geniculata hydroid. — Stock Photo
    Obelia hydrozoan medusa. Light micrograph (LM) of a medusa (young polyp) from the Obelia geniculata hydroid.
    White snail akhatina crawls on the nose of a woman — Stock Photo
    White snail akhatina crawls on the nose of a woman
    Echinococcosis multilocularis hydatid cyst, computer illustration — Stock Photo
    Echinococcosis multilocularis hydatid cyst, computer illustration
    Aphid body infected by parasitic wasp. — Stock Photo
    Aphid body infected by parasitic wasp.
    Hydatid disease in liver, cystic echinococcosis, Computer illustration — Stock Photo
    Hydatid disease in liver, cystic echinococcosis, Computer illustration
    Leaf hopper sitting on green fresh stem. — Stock Photo
    Leaf hopper sitting on green fresh stem.
    Camouflaged orbweaver spider on dried wild plant. — Stock Photo
    Camouflaged orbweaver spider on dried wild plant.
    Close-up of metallic green bottle fly perched on dried wild plant. — Stock Photo
    Close-up of metallic green bottle fly perched on dried wild plant.
    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
    Female crab spider guarding nest on plant. — Stock Photo
    Female crab spider guarding nest on plant.
    Close-up of true dung beetle portrait in wildlife. — Stock Photo
    Close-up of true dung beetle portrait in wildlife.
    Close-up of black leaf beetle on piece of lichen-covered branch. — Stock Photo
    Close-up of black leaf beetle on piece of lichen-covered branch.
    Adult Cicadas on white background — Stock Photo
    Adult Cicadas on white background
    Silver Y moth caterpillar feeding on honeysuckle leaf. — Stock Photo
    Silver Y moth caterpillar feeding on honeysuckle leaf.
    Echinococcosis multilocularis hydatid cyst, computer illustration — Stock Photo
    Echinococcosis multilocularis hydatid cyst, computer illustration
    Close-up of dagger fly on plantago lanceolata plant. — Stock Photo
    Close-up of dagger fly on plantago lanceolata plant.
    Silver y moth caterpillar feeding on Honeysuckle leaf. — Stock Photo
    Silver y moth caterpillar feeding on Honeysuckle leaf.
    Close-up of halictid bee sitting on wild plant. — Stock Photo
    Close-up of halictid bee sitting on wild plant.
    House dust mites — Stock Photo
    House dust mites
    Parasitic louse on human head skin, digital illustration. — Stock Photo
    Parasitic louse on human head skin, digital illustration.
    Banded sea urchin — Stock Photo
    Banded sea urchin
    Close-up of noctuid moth on wild plant stem. — Stock Photo
    Close-up of noctuid moth on wild plant stem.
    Close-up of tachinid fly sitting on wild plant. — Stock Photo
    Close-up of tachinid fly sitting on wild plant.
    Hoverfly insect perched on dried wildflower. — Stock Photo
    Hoverfly insect perched on dried wildflower.
    Head louse on white background, digital illustration. — Stock Photo
    Head louse on white background, digital illustration.
    Orange knee sawfly sitting on plant stem. — Stock Photo
    Orange knee sawfly sitting on plant stem.
    Close-up of Idas blue butterfly on thin branch. — Stock Photo
    Close-up of Idas blue butterfly on thin branch.
    Children with their grandfather on the beach — Stock Photo
    Children with their grandfather on the beach
    Close-up of a starfish on a rock in the ocean, Indonesia — Stock Photo
    Close-up of a starfish on a rock in the ocean, Indonesia
    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
    Parasitic adult Ticks — Stock Photo
    Parasitic adult Ticks
    Soft corals and fish on reef — Stock Photo
    Soft corals and fish on reef
    Close-up of flower crab spider on wild plant. — Stock Photo
    Close-up of flower crab spider on wild plant.
    Blood sucking common Bedbug — Stock Photo
    Blood sucking common Bedbug
    African mantis in threatening pose — Stock Photo
    African mantis in threatening pose
    Insects preserved in amber — Stock Photo
    Insects preserved in amber
    Close-up of ground beetle detailed portrait in macrophotography. — Stock Photo
    Close-up of ground beetle detailed portrait in macrophotography.
    Gastrotrich eggs. Coloured scanning electron micrograph (SEM) of a Chaetonotus sp. gastrotrich eggs. Gastrotrichs are microscopic, worm-like animals found in both freshwater and marine habitats — Stock Photo
    Gastrotrich eggs. Coloured scanning electron micrograph (SEM) of a Chaetonotus sp. gastrotrich eggs. Gastrotrichs are microscopic, worm-like animals found in both freshwater and marine habitats
    Silver Y moth caterpillar feeding on honeysuckle plant leaf. — Stock Photo
    Silver Y moth caterpillar feeding on honeysuckle plant leaf.
    Digital illustration of threadworm in human intestine. — Stock Photo
    Digital illustration of threadworm in human intestine.
    Close-up of Northern scorpion eating fy. — Stock Photo
    Close-up of Northern scorpion eating fy.
    Close-up of Lasioglossum bee sleeping on lilac wildflower. — Stock Photo
    Close-up of Lasioglossum bee sleeping on lilac wildflower.
    Beautiful five sea anemones on white background — Stock Photo
    Beautiful five sea anemones on white background
    Octopus at produce market on background, close up — Stock Photo
    Octopus at produce market on background, close up
    Head louse on human hair, digital illustration. — Stock Photo
    Head louse on human hair, digital illustration.
    Head louse on human hair, digital illustration. — Stock Photo
    Head louse on human hair, digital illustration.
    Parasitic adult Ticks — Stock Photo
    Parasitic adult Ticks
    Digital illustration showing close-up of ciliate protozoan Balantidium coli intestinal parasite causing balantidiasis ulcer in human intestinal tract. — Stock Photo
    Digital illustration showing close-up of ciliate protozoan Balantidium coli intestinal parasite causing balantidiasis ulcer in human intestinal tract.
    Close-up of girl holding starfish toy in garden — Stock Photo
    Close-up of girl holding starfish toy in garden
    Colored scanning electron micrograph of predatory ciliate protozoan Loxophyllum. — Stock Photo
    Colored scanning electron micrograph of predatory ciliate protozoan Loxophyllum.
    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.
    Head louse on human hair, digital illustration. — Stock Photo
    Head louse on human hair, digital illustration.
    Small copper butterfly covered by dew drops on wild plant. — Stock Photo
    Small copper butterfly covered by dew drops on wild plant.
    Dead bluebottle fly — Stock Photo
    Dead bluebottle fly
    Sheetweb spider sitting on grass seed head. — Stock Photo
    Sheetweb spider sitting on grass seed head.
    Colorful harlequin bug sitting on thin plant branch. — Stock Photo
    Colorful harlequin bug sitting on thin plant branch.
    Portrait of purple carabid beetle on orange background. — Stock Photo
    Portrait of purple carabid beetle on orange background.
    Ancient ammonite animal on white background, computer illustration. — Stock Photo
    Ancient ammonite animal on white background, computer illustration.
    Shell of unidentified sea snail. — Stock Photo
    Shell of unidentified sea snail.
    Echinococcosis multilocularis hydatid cyst, computer illustration — Stock Photo
    Echinococcosis multilocularis hydatid cyst, computer illustration