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A petri dish with common yeast and bacteria colonies.

The water surface is dirty.

Aquatic plant Sophora japonica leaf duckweed

Herabuna (Carassius cuvieri) the Japanese crucian carp swimming in shallow water during spawning season.

small duckweed Floating on the surface and the water put in the tank.

Colonies of pathogenic bacteria in a Petri dish, microbiological studies

The textures of aquatic plan growth in an outdoor pond.

Poropuntius normani Smith, natural fish in a Nam-Song river, feed the fish

Mecoptera from Parapolycentropus paraburmiticus extinct species (female). Burmese amber, Myanmar, Cenomian, Upper Cretaceous, approximately 100 million years ago, age of dinosaurs. Image taken with extreme macro and focus stacking technique.

Tadpole family and green nature background, Tadpoles and family find any food in water

Plants grown on the river, water lily plant, nature background.

Fungus Penicillium olsonii, Penicillium expansum and Eurotium rubrum. .

Abstract small fish and reflections in the water.

Many fresh raw live shrimps close up, heap of prawns on seafood market, tropical marine crustaceans, gourmet healthy food, sea or ocean animal, shrimp pattern, prawn texture. Raw Prawns. Red Shrimp Prawn.

green grass by the river

Algae and river plants.

water lily pond in ireland

phyllanthus fluitans and other floating plants on aquarium

Green Yellow Water In Swimming Pool,Problem Service Concept.dirty Abandoned Pool. High quality photo

Dragonfly nymph in water studio shot

Lotus: ; ten billions in a dirty pond

Insect in Amber, Fossils Close up

Many floating leaves in the marshy pond of a wetland

Small river polluted with domestic sewage. Lifeless river in degradation. Environmental threat

Close-up of the sewer with moss.

Special national park and resort Zasavica in Serbia, Europe, landscape

Green algae slime on the edge of a pond during a hot dry summer. Pond management or livestock pond image with pond alage.

Shell series: sea shells in various colors

Free Images: "bestof:Spawn of a species of Natica (from a specimen in the British Museum).jpeg check categories 14 September 2015 5 Spawn of a species of Natica from a specimen in"

Svastra_aegis,_F,_Back1,_GA,_Baker_County_2015-01-12-14.02.05_ZS_PMax.jpg

Svastra_aegis,_F,_Face,_GA,_Baker_County_2015-01-12-14.15.52_ZS_PMax.jpg

Svastra_aegis,_F,_Side,_GA,_Baker_County_2015-01-12-14.35.37_ZS_PMax.jpg

Icteranthidium_grohmanni,_M,_Back,_Greece,_Aegean_Islands,_Lesvos,_Mytilene_2015-02-19-14.46.55_ZS_PMax.jpg

Bombus_impatiens,_red_freak,_F,_Side,_Maryland,_Frederick_County_2014-12-05-14.05.43_ZS_PMax.jpg

Osmia_rufohirta,_M,_Back,_Greece,_Aegean_Islands,_Lesvos,_Mytilene_2015-02-12-14.21.51_ZS_PMax.jpg

Endangered mammal species manatee.jpg

Child learns about species.jpg

Ceratina_species,_back,_puntarenas,_costa_rica_2015-04-20-12.18.43_ZS_PMax.jpg

Phragmites invasive grass species in backyard.jpg

Valley elderberry longhorn beetle threatend insect species.jpg

Children on education outreach endangered species fair.jpg

Striped newt salamander rare species notophthalmus perstriatus.jpg

Wildflowers and purple loosestrife an invasive species.jpg

Electrofishing for the asian carp invasive species.jpg

The Santa Ana sucker is a threatened fish species.jpg

Unarmored threespine stickleback endagered species gasterosteus aculeatus williamsoni.jpg

Relict trillium competing with invasive species nepal grass.jpg

Ferns and tree stump.jpg

The rough popcornflower plagiobothrys hirtus an endangered plant species.jpg

Exoneura_species,_f,_australia,_side_2014-11-01-22.14.29_ZS_PMax.jpg

Nomada_species_black,_f,_kyrgystan,_side_2014-08-14-13.55.54_ZS_PMax.jpg

Man standing at edge of wetland area being taken over by invasive species.jpg

Man stands next to an invasive species salt cedar.jpg

Kemp ridley sea turtle endangered species washes up on the beach.jpg

Talks with visitors about the species of bird living in the tree.jpg

Riparian brush rabbits endengered mammal species sylvilagus bachmani riparius.jpg

Pink flowers with bee.JPG

Hylaeus_sp,_F,_Face,_Puerto_Rico,_Yauco_2015-01-30-14.36.57_ZS_PMax.jpg

Hylaeus_sp,_F,_Side,_Puerto_Rico,_Yauco_2015-01-30-14.48.33_ZS_PMax.jpg

Svastra_aegis,_F,_Back,_GA,_Baker_County_2015-01-12-13.49.33_ZS_PMax.jpg

Treehopper_Hand_Sanitizer,_U,_side,_Dominican_Republic_2012-12-11-14.17.47_ZS_PMax.jpg

Lycaeides_melissa_samuelis,_male,_back_2013-01-24-14.30.45_ZS_PMax.jpg

Bombus_vagans,_M,_Face,_NY,_Franklin_2014-07-10-11.03.jpg

Lycaeides_melissa_samuelis,_actual_female,_back_2013-01-24-14.25.57_ZS_PMax.jpg

Lithurgus_tibialis,_M,_Back,_Greece,_Aegean_Islands,_Lesvos,_Moria_2015-03-06-11.57.39_ZS_PMax.jpg

Lithurgus_tibialis,_M,_Side,_Greece,_Aegean_Islands,_Lesvos,_Moria_2015-03-06-12.21.48_ZS_PMax.jpg

Luke_Whitaker's_moth_collection,_U,_coccoon,_Virginia,_Chincoteague_2014-11-25-14.51.05_ZS_PMax.jpg

Luke_Whitaker's_moth_collection,_U,_pupae,_Virginia,_Chincoteague_2014-11-25-14.57.49_ZS_PMax.jpg

Lithurgus_tibialis,_M,_Face,_Greece,_Aegean_Islands,_Lesvos,_Moria_2015-03-06-12.08.13_ZS_PMax.jpg

Lithurgus_tibialis,_F,_Side,_Greece,_Aegean_Islands,_Lesvos,_Mytilene_2015-03-06-15.20.12_ZS_PMax.jpg

Osmia_rufohirta,_F,_Face,_Greece,_Aegean_Islands,_Lesvos,_Mytilene_2015-02-16-16.04.47_ZS_PMax.jpg

Osmia_rufohirta,_F,_Back,_Greece,_Aegean_Islands,_Lesvos,_Mytilene_2015-02-16-15.52.37_ZS_PMax.jpg

Andrena_barbilabis,_F,_Face,_PG_Co,_MD_2014-02-05-16.41.14_ZS_PMax.jpg

Anthophora_rubricrus,_F,_Side,_Greece,_Aegean_Islands_2014-12-09-14.21.31_ZS_PMax.jpg

Nomada_fragariae,_F,_Face,_MD,_PG_County_2015-09-01-14.40.10_ZS_PMax_UDR.jpg

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