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01156162
Mistle thrush (Turdus viscivorus),Kuusamo, Finland, May 1998

01156161
Lapland bunting (Calcarius lapponicus) male flying, Karigasniemi, Finland, June 2005

01156160
Lapland bunting (Calcarius lapponicus) male perched, Karigasniemi, Finland, June 2005

01156159
Lapland bunting (Calcarius lapponicus) male perched, Karigasniemi, Finland, June 2005

01156158
Lapland bunting (Calcarius lapponicus) female perched, Helsinki, Finland, January 2003

01156157
Lapland bunting (Calcarius lapponicus) female perched, Helsinki, Finland, January 2003

01156156
Lapland bunting (Calcarius lapponicus) female in snow, Helsinki, Finland, January 2003

01156155
Lapland bunting (Calcarius lapponicus) female perched, Helsinki, Finland, January 2003

01156154
Lapland bunting (Calcarius lapponicus) male flying, high angle shot, Karigasniemi, Finland, June 2005

01156153
Lapland bunting (Calcarius lapponicus) female perched, Helsinki, Finland, January 2003

01156152
Hazel Grouse (Bonasia bonasia) male perched, Kuusamo, Finland, May 2006

01156151
Hazel Grouse (Bonasia bonasia) male perched, Kuusamo, Finland, May 2006

01156150
Hazel Grouse (Bonasia bonasia) male perched, Kuusamo, Finland, may 2006

01156149
Grey Partridge (Perdix perdix) snow cave, Liminka, Finland, February 2006

01156148
Grey Partridge (Perdix perdix) flock feeding under bird table in snow, Liminka, Finland, November 2006

01156147
Grey Partridge (Perdix perdix) flock in snow, Liminka, Finland, November 2006

01156146
Grey Partridge (Grey Partridge) flock in snow, Liminka, Finland, February 2004

01156145
Grey Partridge (Grey Partridge) landing on snow, Liminka, Finland, 2006

01156144
Grey Partridge (Grey Partridge) flock in snow, Liminka, Finland, February 2004

01156143
Grey Partridge (Grey Partridge) pair in thick snow, Liminka, Finland, February 2004

01156142
Grey Partridge (Grey Partridge) buried in thick snow, Liminka, Finland, February 2004

01156141
Grey Heron (Ardea cinerea) walking on ice, Estonia April 2003

01156140
Grey Heron (Ardea cinerea) flying, Porvoo, Finland, April 2006

01156139
Grey Heron (Ardea cinerea) on ice, Porvoo, Finland, April 2004

01156138
Grey Heron (Ardea cinerea) taking off, Porvoo, Finland, April 2004

01156137
Grey Heron (Ardea cinerea) Porvoo, Finland, April 2004

01156136
Grey Heron (Ardea cinerea) Porvoo, Finland, April 2004

01156135
Grey Heron (Ardea cinerea) on ice, Porvoo, Finland, April 2004

01156134
Grey Heron (Ardea cinerea), Porvoo, Finland, April 2004

01156133
Grey Heron (Ardea cinerea) landing on small rock in water, Porvoo, Finland, April 2006

01156132
Grey Heron (Ardea cinerea) landing on small patch of land in wetlands, Porvoo, Finland, April 2006

01156131
Grey Heron (Ardea cinerea) flying, Porvoo, Finland, April 2006

01156130
Greenish Warbler (Phylloscopus trochiloides) singing, Kuusamo, Finland, June 2005

01156129
Greenish Warbler (Phylloscopus trochiloides) perched, Kuusamo, Finland, June 2005

01156128
Greenish Warbler (Phylloscopus trochiloides) singing, Kuusamo, Finland, June 2005

01156127
Greenish Warbler (Phylloscopus trochiloides) perched, Kuusamo, Finland, June 2005

01156126
Greenish Warbler (Phylloscopus trochiloides) perched amongst lichen, Kuusamo, Finland, June 2005

01156125
Great Grey Owl (Strix nebulosa) in snow, Liminka Finland, February 2005

01156124
Great Grey Owl (Strix nebulosa) perched, Hyvinkää Finland, January 2007

01156123
Great Grey Owl (Strix nebulosa) landing on rodent prey in snow, Liminka Finland February 2005

01156122
Great Grey Ow (Strix nebulosa) flying, Liminka, Finland, February 2005

01156121
Great Grey Ow (Strix nebulosa) flying, Liminka, Finland, February 2005

01156120
Great Grey Owl (Strix nebulosa) perched, Hyvinkää, Finland, January 2007

01156119
Great Grey Owl (Strix nebulosa) perched amongst birch trees, Hyvinkää, Finland, January 2007

01156118
Great Grey Owl (Strix nebulosa) perched, Hyvinkää, Finland, January 2007

01156117
Great Grey Owl (Strix nebulosa) landing, Hyvinkää Finland, January 2007

01156116
Great Grey Owl (Strix nebulosa) flying, Hyvinkää, Finland, January 2007

01156115
Great Grey Owl (Strix nebulosa) perched in tree, head cocked to one side, Hyvinkää, Finland, January 2007

01156114
Great Grey Owl (Strix nebulosa) perched in tree, Hyvinkää, Finland, January 2007

01156113
Great Grey Owl (Strix nebulosa) landing on snow, Liminka, Finland, February 2005

01156112
Great Grey Owl (Strix nebulosa) landing, Liminka, Finland, February 2005

01156111
Northern Gosshawk (Accipiter gentilis) at bird prey, Heinola Finland, January 2006

01156110
Northern Goshawk (Accipiter gentilis) at bird prey, Heinola Finland, January 2006

01156109
Northern Goshawk {Accipiter gentilis} Anjalankoski, Finland, January 2004

01156108
Northern Goshawk (Accipiter gentilis) juvenile, drinking, Hungary, July 2006

01156107
Northern Goshawk (Accipiter gentilis) juvenile, Hungary, July 2006

01156106
Northern goshawk (Accipiter gentilis) flying, Helsinki Finland, January 2006 Sky modified

01156105
Northern goshawk (Accipiter gentilis) flying, Helsinki Finland, January 2006

01156104
Northern goshawk (Accipiter gentilis) flying, Helsinki Finland, 2006

01156103
Northern Gosshawk (Accipiter gentilis) at bird prey, Heinola Finland, January 2006

01156102
Northern goshawk (Accipiter Gentilis) flying, Sweden

01156101
Northern Goshawk (Accipiter gentilis) perched, Anjalankoski, Finland, Feburary 2004

01156100
Northern Goshawk (Accipiter gentilis) perched, Anjalankoski, Finland, January 2004

01156099
Northern Goshawk (Accipiter gentilis) male feeding on Hazel Grouse, Heinola, Finland, March 2003

01156098
Northern goshawk (Accipiter Gentilis) flying, Helsinki Finland, December 2002

01156097
Fieldfare (Turdus pilaris) feeding on berries in snow, Vantaa, Finland, December 2005

01156096
Fieldfare (Turdus pilaris) flying, carrying berry in beak, high angle shot from below, Helsinki, Finland, march 2003. Sky modified

01156095
Fieldfare (Turdus pilaris) feeding on berries in snow, Vantaa, Finland, December 2005

01156094
Fieldfare (Turdus pilaris) feeding on berries, Vantaa, Finland, December 2005

01156093
Fieldfare flying (Turdus pilaris) high angle shot from below, Helsinki, Finland, march 2003

01156092
Fieldfare (Turdus pilaris) feeding on berries, Helsinki Finland, March 2003

01156091
Eagle Owl (Bubo bubo) perched in tree in snow, Helsinki, Finland, December 2006

01156090
Eagle Owl (Bubo bubo) looking backwards perched in tree in snow, Helsinki, Finland, December 2006

01156089
Common Crane (Grus grus) Pernaja, Finland, May 2005

01156088
Common Crane (Grus grus) sitting on nest, Pernaja, Finland, May 2005

01156087
Common Crane (Grus grus) Pernaja, Finland, May 2005

01156086
Common Crane (Grus grus) tending to eggs on nest, Pernaja, Finland, May 2005

01156085
Common Crane (Grus grus) sitting on nest, Pernaja, Finland, May 2005

01156084
Common Crane (Grus grus) chasing off duck, Pernaja, Finland, May 2005

01156083
Common Crane (Grus grus) walking through wetlands, Pernaja, Finland, May 2005

01156082
Common Crane (Grus grus) sitting on nest, Pernaja, Finland, May 2005

01156081
Common Crane (Grus grus) sitting on nest, Pernaja, Finland, May 2005

01156080
Common crane (Grus grus) tending to eggs in nest, Pernaja, Finland, May 2005

01156079
Common crane (Grus grus) calling and displaying, Pernaja, Finland, May 2005

01156078
Common cranes feeding (Grus grus), Kuusamo Finland, April 2003

01156077
Common crane (Grus grus) with predatory Red fox in background, Pernaja, Finland, May 2005

01156076
Common crane (Grus grus) calling with Red fox in background, Pernaja, Finland, May 2005

01156075
Common crane (Grus grus) displaying in defense against Red fox {Vulpes vulpes} Pernaja, Finland, May 2005

01156074
Red fox {Vulpes vulpes} wacthing Common crane (Grus grus) and ducks on water, Pernaja, Finland, May 2005

01156073
Common crane (Grus grus) flying through snow, Taivalkoski, Finland, May 2005

01156072
Common Crane (Grus grus) flock feeding in field, Sweden, September 2005

01156071
Chiffchaff (Phylloscopus collybita) perched, Helsinki, Finland, 2005

01156070
Chiffchaff (Phylloscopus collybita) , Estonia, 2003

01156069
Chiffchaff (Phylloccopus collibita), Estonia May 2006

01156068
Chiffchaff (Phylloscopus collybita) perched, Helsinki, Finland, 2005

01156067
Chiffchaff (Phylloscopus collybita) perched, Helsinki, Finland, 2005

01156066
Chiffchaff (Phylloscopus collybita) perched in birch tree, Helsinki, Finland, 2005

01156065
Chiffchaff (Phylloscopus collybita) Estonia 2003

01156064
Female Blackbird (Turdus merula) at water with male Chaffinch {Fringilla coelebs} flying behind, Hungary, 2006

01156063
Blackbird (Turdus merula) male feeding on berries in snow, Vantaa, Finland, 2005

01156062
Blackbird female (Turdus merula) Finland, 2006

01156061
Blackbird (Turdus merula) male at water, Hungary, 2006

01156060
Blackbird (Turdus merula) male bathing, Hungary, 2006

01156059
Blackbird (Turdus merula) female bathing, Hungary, 2006

01156058
Blackbird (Turdus merula) female at water, Hungary 2006

01156057
Blackbird (Turdus merula) male at water, Hungary, 2006

01156056
Blackbird (Turdus merula) male, Helsinki, Finland, 2005

01156055
Blackbird (Turdus merula) sheltering in bush in snow, Finland, 2005

01156054
Blackbird (Turdus merula) male singing, Helsinki, Finland, 2005

01156053
Black Gouse (Tetrao tetrix) female with male displaying in background, Kuusamo, Finland, 2004

01156052
Black Grouse (Tetrao tetrix) pair mating, Kuusamo, Finland, 2004

01156051
Black Grouse (Tetrao tetrix) pair mating, Kuusamo Finland, 2004

01156050
Black Grouse (Tetrao tetrix) males fighting, Kuusamo, Finland, 2004

01156049
Black Grouse (Tetrao tetrix) males fighting, Kuusamo, Finland, 2004

01156048
Black Grouse (Tetrao tetrix) male flying, Kuusamo, Finland, 2004

01156047
Black Grouse (Tetrao tetrix) males fighting with females in background, Kuusamo, Finland, 2004

01156046
Black grouse (Tetrao tetrix) male displaying, Kuusamo, Finland, 2003

01156045
Black grouse (Tetrao tetrix) male calling, Kuusamo, Finland, 2003

01156044
Black Grouse (Tetrao tetrix) male calling, Liminka, Finland, 2003

01156043
Black grouse (Tetrao tetrix) male displaying, Kuusamo, Finland, 2003

01156042
Black Grouse (Tetrao tetrix) male displaying, Liminka, Finland, 2003

01156041
Black Grouse (Tetrao tetrix) female perched with male displaying in background, Kuusamo, Finland, 2004

01156040
Black grouse (Tetrao tetrix) males fighting on snow, Kuusamo, Finland, 2003

01156039
Black Grouse (Tetrao tetrix) male perched on top of conifer with moon behind, Kuusamo, Finland, 2006

01156038
Black Grouse (Tetrao tetrix) male in woodland, Kuusamo, Finland, 2006

01156037
Black grouse (Tetrao tetrix) males fighting on snow, Kuusamo, Finland,l 2003

01156036
Black grouse (Tetrao tetrix) male displaying on snow, Kuusamo, Finland, 2003

01156035
Black Grouse (Tetrao tetrix) male displaying, Kuusamo, Finland, 2004

01156034
Black Gouse (Tetrao tetrix) female, Kuusamo, Finland, 2004

01156033
Black Gouse (Tetrao tetrix) female, Kuusamo, Finland, 2004

01156032
Black Gouse (Tetrao tetrix) female with male behind, Kuusamo, Finland, 2004

01156031
Black Grouse (Tetrao tetrix) female, Kuusamo, Finland, 2004

01156030
Arctic Warbler singing (Phylloscopus borealis), Kuusamo, Finland, 2005

01156029
Arctic Warbler singing (Phylloscopus borealis), Kuusamo, Finland, 2005

01156028
Arctic Warbler (Phylloscopus borealis), Kuusamo, Finland, 2005

01156027
Arctic Warbler (Phylloscopus borealis) Kuusamo, Finland, 2005

01156026
Arctic Warbler (Phylloscopus borealis) Kuusamo, Finland, 2005

01156025
Arctic Warbler singing (Phylloscopus borealis) Kuusamo, Finland, 2005

01156024
Arctic Warbler (Phylloscopus borealis), Kuusamo, Finland, 2005

01156023
Arctic Warbler (Phylloscopus borealis), Kuusamo, Finland, 2005

01156022
Arctic Warbler (Phylloscopus borealis), Kuusamo Finland, 2005

01156021
Arctic Warbler singing (Phylloscopus borealis), Kuusamo, Finland, 2005

01156020
Arctic Warbler (Phylloscopus borealis) Kuusamo, Finland, 2005

01156019
Beach Bean (Canavalia maritime} growing in the sand of Samsambo Beach, Galibi, Surinam . 2003.

01156018
Potugese Man of War (Physalia physalis} stranded on Babunsanti Beach, Galibi, Surinam. 2003.

01156017
Hikers walking down the Voltzberg / Voltz mountain, Central Surinam Nature Reserve, Surinam. 2003.

01156016
Tadpole shrimp {Lepidurus sp} Lake Baikal, Siberia.

01156015
Dead rainforest tree on the "beach" of Lake Brokopondo, Surinam. Dam was built in 1964 and the rainforest flooded. In dry season some tree roots are exposed on the higher ground. 2003.

01156014
Flooded rainforest trees in Brokopondo power dam lake, Surinam. Dam was built in 1964 and the rainforest flooded. 2003.

01156013
Oil Palm "Maripa" (Attalea maripa) tree with fruit, Babunsanti Beach, Galibi, Surinam . 2003.

01156012
Green rainbow lizard (Cnemidophorus lemniscatus) female, Galibi, Surinam . 2003.

01156011
Largescale foureyed fish (Anablebs anablebs) amongst the waves breaking on the Samsambo Beach, Galibi, Surinam. 2003.

01156010
Red mangrove (Rhizophora mangle) trees growing where sand from the beach has covered the normal mud. Babunsanti Beach, Galibi, Surinam . 2003.

01156009
Rubbish at tide line on Babunsanti Beach, Galibi, Surinam. 2003.

01156008
Green turtle {Chelonia mydas} returns to sea after laying eggs on Babunsanti Beach, Galibi, Surinam. . 2003.

01156007
Green turtle {Chelonia mydas} laying eggs on Babunsanti Beach, Galibi, Surinam. 2003.

01156006
Leatherback turtle {Dermochelys coriacea} returning to sea after egg laying on Babunsanti Beach, Galibi, Surinam . 2003.

01156005
Warden recording the behaviour of egg laying Green turtles {Chelonia mydas} on Babunsanti Beach, Galibi, Surinam. . 2003.

01156004
Eggs of Leatherback turtle {Dermochelys coriacea} Babunsanti Beach, Galibi, Surinam. . 2003.

01156003
Warden recording the behaviour of egg laying Green turtles {Chelonia mydas} on Babunsanti Beach, Galibi, Surinam. 2003.

01156002
Leatherback turtle (Dermochelys coriacea) closing her nest after laying eggs. Babunsanti Beach, Galibi, Surinam. 2003.

01156001
Leatherback turtle (Dermochelys coriacea) closing her nest after laying eggs. Babunsanti Beach, Galibi, Surinam . 2003.

01156000
Cactus on the slopes of the Voltzberg / Voltz mountain, Central Surinam Nature Reserve, Surinam . 2003.

01155999
Cactus on the slopes of the Voltzberg / Voltz mountain, Central Surinam Nature Reserve, Surinam . 2003.

01155998
Cactus growingon the Voltzberg / Voltz mountain, Central Surinam Nature Reserve, Surinam . 2003.

01155997
View north from the Voltzberg / Voltz mountain, Central Surinam Nature Reserve, Surinam . 2003.

01155996
View from the Voltzberg / Voltz mountain, Central Surinam Nature Reserve, Surinam. 2003.

01155995
Hanging Ants nest. Usually there is with this ant nest a hidden nest of very agressiv wasps. Surinam . 2003.

01155994
Chinese mitten crab (Eriocheir sinensis) Holland. Introduced species

01155993
Chinese mitten crab (Eriocheir sinensis) Holland. Introduced species

01155992
Chinese mitten crab (Eriocheir sinensis) Holland. Introduced species

01155991
Tadpole shrimp {Lepidurus sp} Lake Baikal, Siberia.

01155990
Water fleas (Daphnia magna) and Yellow water lily, Peat bog lake, Holland

01155989
Water fleas (Daphnia magna) Holland

01155988
Water fleas (Daphnia magna) on Water violet (Hottonia palus) Holland

01155987
Louisiana swamp crayfish (Procambarus clarkii) captive, introduced to Holland in 1990's.

01155986
Louisiana swamp crayfish (Procambarus clarkii) captive, introduced to Holland in 1990's.

01155985
Atlantic salmon {Salmo salar} Very young salmon / parr. They live for a time in fresh water before they swim to the sea. Penninsula Gaspé, Canada

01155984
Atlantic salmon {Salmo salar} Very young salmon / parr. They live for a time in fresh water before they swim to the sea. Penninsula Gaspé, Canada

01155983
Atlantic salmon (Salmo salar} waiting in pool at mouth of river for water temperature to drop 3 degrees before swimming up river to spawn, Gaspe Penninsula, Canada.

01155982
Atlantic salmon (Salmo salar} waiting in pool at mouth of river for water temperature to drop 3 degrees before swimming up river to spawn, Gaspe Penninsula, Canada.

01155981
Atlantic salmon (Salmo salar} waiting in pool at mouth of river for water temperature to drop 3 degrees before swimming up river to spawn, Gaspe Penninsula, Canada.

01155980
Atlantic salmon (Salmo salar} waiting in pool at mouth of river for water temperature to drop 3 degrees before swimming up river to spawn, Gaspe Penninsula, Canada.

01155979
Atlantic salmon (Salmo salar} waiting in pool at mouth of river for water temperature to drop 3 degrees before swimming up river to spawn, Gaspe Penninsula, Canada. Note one salmon has a fishing hook and line in his back.

01155978
Electric eel (Electrophorus electricus) in river, Surinam . 2003.

01155977
Pink Water lily buds and leaves growing in lake in Bauxite mine, Surinam. 2003.

01155976
Harness sheatfish (Hypostomus sp) Surinam. . 2003.

01155975
Cocoa beans {Theobroma cacao} growing on tree, Surinam. 2003.

01155974
Larva of a dragonfly (Aeshna sp} on vegetation in garden pond, Holland

01155973
Freshwater sponge {Spongilla lacustris} showing discharge openings where the water stripped from plankton is pumped out. Green coloration due to alage, garden pond, Holland

01155972
Milkwhite flatworm (Dendrocoelum lacteum) on White Water lily seed reflected at the water surface in garden pond, Holland

01155971
Swan mussel (Anodonta cygnea) filter feeding on plankton with tentacles to prevent debris from entering, Holland

01155970
Swan mussel (Anodonta cygnea) male releasing sperm which will be dispersed by water currents to a female, Holland

01155969
Swan mussel (Anodonta cygnea) filter feeding on plankton with tentacles to prevent debris from entering, Holland

01155968
Greater european pea clams / Pea mussels (Pisidium amnicum) filter feeding in garden pond, Holland

01155967
Greater european pea clams / Pea mussels (Pisidium amnicum) filter feeding in garden pond, Holland

01155966
Ramshorn snail (Planorbis planorbis) feeding on algae on reed stem, Holland

01155965
Ramshorn Snail (Planorbis planorbis) juvenile, Holland

01155964
Zebra mussels {Dreissena polymorpha} attached to an old steel construction in a new brackish-fresh water lake. Holland

01155963
Zebra mussels {Dreissana polymorpha} attached to stone on lake bed. Lough Keye, Ireland

01155962
Close up of Zebra mussel {Dreissena polymorpha} filter feeding clearly showing the inlet (left) and outlet (right) openings, with tentacles at the inlet opening to prevent rubbish entering, Deep peat-bog lake, Holland

01155961
Close up of Zebra mussel {Dreissena polymorpha} filter feeding clearly showing the inlet (lower) and outlet (upper) openings, with tentacles at the inlet opening to prevent rubbish entering, Deep peat-bog lake, Holland

01155960
Zebra mussels {Dreissena polymorpha} attached to aquatic plants, Lough Keye, Ireland

01155959
Zebra mussels {Dreissena polymorpha} one adult and several young filter feeding, Holland.

01155958
Zebra mussels {Dreissena polymorpha} filter feeding, Holland

01155957
Zebra mussels {Dreissena polymorpha} filter feeding, Holland

01155956
Zebra mussels {Dreissena polymorpha} filter feeding with tentacles preventing discharge from entering. Peat-bog lake, Holland

01155955
Close up of Zebra mussel {Dreissena polymorpha} filter feeding with tentacles preventing discharge from entering. Peat-bog lake, Holland

01155954
Zebra mussels {Dreissena polymorpha} attached to a stone on lake floor, Lough Keye, Ireland

01155953
Zebra mussels {Dreissena polymorpha} attached to a piece of wood on lake floor, Lough Keye, Ireland

01155952
Mass of tiny Pond snails feeding on algae in lake, Holland

01155951
Eggs of a Pond Snail on the leaf of Water Soldier, Lake Naarden, Holland

01155950
Eggs of Common bithynia {Bithynia tentaculata} Peat-bog lake, Holland

01155949
Eggs of Non-biting midges (Chironomidae) attached to freshwater vegetation, Holland

01155948
Common bithynia {Bithynia tentaculata} Peat-bog lake, Holland

01155947
Ear snail (Lymnaea auricularia) Holland

01155946
Great ramshorn snail (Planorbius corneus) feeding on algae on plant, Holland

01155945
Great ramshorn snail (Planorbius corneus) feeding on algae on plant, Holland

01155944
Great ramshorn snail (Planorbius corneus) feeding on algae on growing water lily leaf, Holland

01155943
Ear snail (Lymnaea auricularia) peat bog, Holland

01155942
Ear snail (Lymnaea auricularia) peat bog, Holland

01155941
Oval Pond Snail (Radix ovata) on reed stem, Holland

01155940
Great Pond Snail (Lymnaea stagnalis) on Water lily leaf in garden pond, Holland

01155939
Great Pond Snail (Lymnaea stagnalis) and Caddis fly larva on stems of Bulrush, peat bog, Holland

01155938
Reflection of Great Pond Snail (Lymnaea stagnalis) floating on water surface, Holland. Pond Snails have lungs and from time to time they float on the surface to breath. After this they can stay for quite a long time without oxygen.

01155937
Great Pond Snail (Lymnaea stagnalis) shell covered in algae, Holland

01155936
Great Pond Snail (Lymnaea stagnalis) Holland

01155935
Ear snail (Lymnaea auricularia) on Canadian Waterweed (Elodea sp) Holland

01155934
Ear snail (Lymnaea auricularia} carrying eggs of another Ear snail on its shell, Holland

01155933
Eggs of Non-biting midge (Chironomidae) on freshwater vegetation, note water mite on eggs, Holland

01155932
Eggs of a Pond Snail laid underwater on vegetation, Holland

01155931
Eggs of an insect laid on freshwater aquatic plant, Lake Naarden, Holland

01155930
River snail (Viviparus contectus) feeding on algae on river bed. Holland

01155929
River snail (Viviparus contectus) Holland

01155928
River snail (Viviparus contectus) Holland

01155927
River snail (Viviparus contectus) Holland

01155926
River snail (Viviparus contectus) feeding on river bed, River Czarna Hanca, Poland

01155925
Pond Skaters (Gerris rufoscutellatus) view from below, captive, Holland

01155924
Pond Skater (Gerris rufoscutellatus) view from below, captive, Holland

01155923
Sludge worms (Tubifex rivilorum) These worms live in the sludge of nutrient rich waters and factory effluents. Aquarium, Holland

01155922
Sludge worm