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    White-faced meadowhawk dragonflies mating on plant. — Stock Photo
    White-faced meadowhawk dragonflies mating on 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
    Digital illustration of ciliate protozoan Balantidium coli intestinal parasites causing ulcer in intestinal tract. — Stock Photo
    Digital illustration of ciliate protozoan Balantidium coli intestinal parasites causing ulcer in intestinal tract.
    Coloured scanning electron micrograph (SEM) of the shell of the foraminiferan Orbulina sp. — Stock Photo
    Coloured scanning electron micrograph (SEM) of the shell of the foraminiferan Orbulina sp.
    Echinococcus granulosus hydatid cyst, computer illustration — Stock Photo
    Echinococcus granulosus hydatid cyst, computer illustration
    Cat flea head — Stock Photo
    Cat flea head
    Ant head. Coloured scanning electron micrograph (SEM) of the head of an ant (family Formicidae). showing its large compound eyes (red) and jaws. Magnification: x50 when printed 10 centimetres wide. — Stock Photo
    Ant head. Coloured scanning electron micrograph (SEM) of the head of an ant (family Formicidae). showing its large compound eyes (red) and jaws. Magnification: x50 when printed 10 centimetres wide.
    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
    Hydatid disease in liver, cystic echinococcosis, Computer illustration — Stock Photo
    Hydatid disease in liver, cystic echinococcosis, Computer illustration
    Parasitic nematode worm — Stock Photo
    Parasitic nematode worm
    Adult dust mite — Stock Photo
    Adult dust mite
    Parasitic adult Ticks — Stock Photo
    Parasitic adult Ticks
    Hydatid disease in liver caused by larvae of parasitic tapeworm Echinococcus multilocularis, computer illustration — Stock Photo
    Hydatid disease in liver caused by larvae of parasitic tapeworm Echinococcus multilocularis, computer illustration
    Underwater photograph of the putative Siphonophore species Agalma okeni taken during a blackwater (bluewater at night) scuba dive off the Kona Coast, the Big Island, Hawaii, during the summer; Island of Hawaii, Hawaii, United States of America — Stock Photo
    Underwater photograph of the putative Siphonophore species Agalma okeni taken during a blackwater (bluewater at night) scuba dive off the Kona Coast, the Big Island, Hawaii, during the summer; Island of Hawaii, Hawaii, United States of America
    Eggs of parasitic worm Trichuris trichiura, computer illustration — Stock Photo
    Eggs of parasitic worm Trichuris trichiura, computer illustration
    Hydatid disease in liver, cystic echinococcosis, Computer illustration — Stock Photo
    Hydatid disease in liver, cystic echinococcosis, Computer illustration
    Hydatid disease in liver, cystic echinococcosis, Computer illustration — Stock Photo
    Hydatid disease in liver, cystic echinococcosis, Computer illustration
    Digital illustration of parasitic hookworms Ancylostoma duodenale on white background. — Stock Photo
    Digital illustration of parasitic hookworms Ancylostoma duodenale on white background.
    Echinococcosis multilocularis hydatid cyst, computer illustration — Stock Photo
    Echinococcosis multilocularis hydatid cyst, computer illustration
    Eggs of parasitic worm Trichuris trichiura, computer illustration — Stock Photo
    Eggs of parasitic worm Trichuris trichiura, computer illustration
    Stomach infected with parasitic nematode worms — Stock Photo
    Stomach infected with parasitic nematode worms
    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
    Shield bugs on wildflower stems in meadow. — Stock Photo
    Shield bugs on wildflower stems in meadow.
    Naegleria brain-eating amoeba forms, digital illustration — Stock Photo
    Naegleria brain-eating amoeba forms, digital illustration
    Hydatid disease in liver, cystic echinococcosis, Computer illustration — Stock Photo
    Hydatid disease in liver, cystic echinococcosis, Computer illustration
    Redknee tarantula spider being observed by boy. — Stock Photo
    Redknee tarantula spider being observed by boy.
    Digital illustration of multiple threadworms in human intestine. — Stock Photo
    Digital illustration of multiple threadworms in human intestine.
    While scuba diving the Kona coast, The Big Island, Hawaii, I saw this male Yellowtail Coris (Coris gaimard) swim by holding sea urchin prey, a red slate pencil urchin (Heterocentrotus mamillatus); Island of Hawaii, Hawaii, United States of America — Stock Photo
    While scuba diving the Kona coast, The Big Island, Hawaii, I saw this male Yellowtail Coris (Coris gaimard) swim by holding sea urchin prey, a red slate pencil urchin (Heterocentrotus mamillatus); Island of Hawaii, Hawaii, United States of America
    Coloured scanning electron micrograph (SEM) of Pediculus humanus capitis, human head lice. P. humanus is divided into two subspecies; the head louse P. humanus capitis and the body louse P. humanus corporis — Stock Photo
    Coloured scanning electron micrograph (SEM) of Pediculus humanus capitis, human head lice. P. humanus is divided into two subspecies; the head louse P. humanus capitis and the body louse P. humanus corporis
    Echinococcus granulosus hydatid cyst, computer illustration — Stock Photo
    Echinococcus granulosus hydatid cyst, computer illustration
    Ant head. Coloured scanning electron micrograph (SEM) of the head of an ant (family Formicidae). showing its large compound eyes (red) and jaws. Magnification: x50 when printed 10 centimetres wide. — Stock Photo
    Ant head. Coloured scanning electron micrograph (SEM) of the head of an ant (family Formicidae). showing its large compound eyes (red) and jaws. Magnification: x50 when printed 10 centimetres wide.
    Sarcoptic mange mites eggs — Stock Photo
    Sarcoptic mange mites eggs
    House dust mite — Stock Photo
    House dust mite
    Annular band of live Lobe Coral (Porites lobata) growing over dead corals off the Kona coast, the Big Island; Island of Hawaii, Hawaii, United States of America — Stock Photo
    Annular band of live Lobe Coral (Porites lobata) growing over dead corals off the Kona coast, the Big Island; Island of Hawaii, Hawaii, United States of America
    Echinococcus granulosus hydatid cyst, computer illustration — Stock Photo
    Echinococcus granulosus hydatid cyst, computer illustration
    A Blue Dragon Nudibranch (Pteraeolidia semperi) on the backwall of Molokini Crater, offshore of Maui; Molokini Crater, Maui, Hawaii, United States of America — Stock Photo
    A Blue Dragon Nudibranch (Pteraeolidia semperi) on the backwall of Molokini Crater, offshore of Maui; Molokini Crater, Maui, Hawaii, United States of America
    Hydatid disease in liver caused by larvae of parasitic tapeworm Echinococcus multilocularis, computer illustration — Stock Photo
    Hydatid disease in liver caused by larvae of parasitic tapeworm Echinococcus multilocularis, computer illustration
    Cat flea. Coloured scanning electron micrograph (SEM) of a cat flea (Ctenocephalides felis). Its body is laterally-flattened to allow it to move easily through the fur of its cat host — Stock Photo
    Cat flea. Coloured scanning electron micrograph (SEM) of a cat flea (Ctenocephalides felis). Its body is laterally-flattened to allow it to move easily through the fur of its cat host
    Eggs of parasitic worm Trichuris trichiura, computer illustration — Stock Photo
    Eggs of parasitic worm Trichuris trichiura, computer illustration
    Echinococcosis multilocularis hydatid cyst, computer illustration — Stock Photo
    Echinococcosis multilocularis hydatid cyst, computer illustration
    Cushion Star (Culcita novaeguineae) resting on a reef off the Kona coast, the Big Island; Island of Hawaii, Hawaii, United States of America — Stock Photo
    Cushion Star (Culcita novaeguineae) resting on a reef off the Kona coast, the Big Island; Island of Hawaii, Hawaii, United States of America
    Ant head. Coloured scanning electron micrograph (SEM) of the head of an ant (family Formicidae). showing its large compound eyes (blue) and jaws. Magnification: x50 when printed 10 centimetres wide. — Stock Photo
    Ant head. Coloured scanning electron micrograph (SEM) of the head of an ant (family Formicidae). showing its large compound eyes (blue) and jaws. Magnification: x50 when printed 10 centimetres wide.
    Liver fluke Clonorchis sinensis — Stock Photo
    Liver fluke Clonorchis sinensis
    Close-up of couple of long horned bees sleeping on thin branch. — Stock Photo
    Close-up of couple of long horned bees sleeping on thin branch.
    Colourful yellow Crinoid feeding surrounded by red hard coral; Fiji — Stock Photo
    Colourful yellow Crinoid feeding surrounded by red hard coral; Fiji
    Parasitic adult Ticks — Stock Photo
    Parasitic adult Ticks
    Starfish and fish on seabed, Indonesia — Stock Photo
    Starfish and fish on seabed, Indonesia
    Lateral view of a Cushion Star (Culcita novaeguineae) resting on a reef off Maui; Maui, Hawaii, United States of America — Stock Photo
    Lateral view of a Cushion Star (Culcita novaeguineae) resting on a reef off Maui; Maui, Hawaii, United States of America
    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
    Eggs of parasitic worm Trichuris trichiura, computer illustration — Stock Photo
    Eggs of parasitic worm Trichuris trichiura, computer illustration
    Zebra Moray Eel (Gymnomuraena zebra) gliding over Finger Coral (Porites compressa) off the Kona Coast; Island of Hawaii, Hawaii, United States of America — Stock Photo
    Zebra Moray Eel (Gymnomuraena zebra) gliding over Finger Coral (Porites compressa) off the Kona Coast; Island of Hawaii, Hawaii, United States of America
    Close-up of Antler Coral (Pocillopora grandis) revealing individual coral polyps which are green from endosymbiotic zoothanthellae (Symbiodinium sp.). This coral head is located on Haloha Reef which is located just off Maui; Maui, Hawaii, United Stat — Stock Photo
    Close-up of Antler Coral (Pocillopora grandis) revealing individual coral polyps which are green from endosymbiotic zoothanthellae (Symbiodinium sp.). This coral head is located on Haloha Reef which is located just off Maui; Maui, Hawaii, United Stat
    Eggs of parasitic worm Trichuris trichiura, computer illustration — Stock Photo
    Eggs of parasitic worm Trichuris trichiura, computer illustration
    Red Slate Pencil Urchin (Heterocentrotus mamillatus) common on Hawaiian reefs at shallow depths in high energy habitats such as the backwall of Molokini Crater offshore of Maui, Hawaii, USA seen here; Molokini Crater, Maui, Hawaii, United States — Stock Photo
    Red Slate Pencil Urchin (Heterocentrotus mamillatus) common on Hawaiian reefs at shallow depths in high energy habitats such as the backwall of Molokini Crater offshore of Maui, Hawaii, USA seen here; Molokini Crater, Maui, Hawaii, United States
    Stomach infected with parasitic nematode worms — Stock Photo
    Stomach infected with parasitic nematode worms
    Three dinoflagellates (blue), coloured scanning electron micrograph (SEM). Dinoflagellates are unicellular protozoans. — Stock Photo
    Three dinoflagellates (blue), coloured scanning electron micrograph (SEM). Dinoflagellates are unicellular protozoans.
    Light micrograph (LM) of a medusa (young polyp) from the Obelia geniculata hydroid. — Stock Photo
    Light micrograph (LM) of a medusa (young polyp) from the Obelia geniculata hydroid.
    Close-up of the coral-eating Crown-of-Thorns Starfish (Acanthaster planci) growing a new arm (left side over Rice Coral). This was photographed while scuba diving the Kona coast, the Big Island; Island of Hawaii, Hawaii, United States of America — Stock Photo
    Close-up of the coral-eating Crown-of-Thorns Starfish (Acanthaster planci) growing a new arm (left side over Rice Coral). This was photographed while scuba diving the Kona coast, the Big Island; Island of Hawaii, Hawaii, United States of America
    Adult parasitic louse — Stock Photo
    Adult parasitic louse