freshwater

Trout swimming Salmo trutta seen from above on a sandy river bottom, demonstrating carangiform movement

Euglena cut to white showing green photosynthetic colour and organelles

Hylobacter schematic illustration showing the bacteria with fringes

Nematode worm showing transparent nature and internal organs and body parts. Cut to white

Pen and ink illustration of a the life in a drop of water under the microscope including Paramecium amoeba bell-animalcule and algae

Diatom group showing diverse shapes and colours of these organisms

Micro organism group amoeba euglena paramecium cut to white

Amoeba cut to white idealised schematic illustration in blue with organelles clearly depicted

Daphnia about to be eaten by the bladder of the carnivorous bladderwort Utricularia species

White clawed crayfish Austropotamobius pallipes very simplifies line and wash drawing showing the crusatcean in profile

White clawed crayfish Austropotamobius pallipes in profile with claws lifted and antennae extended

Fresh water shrimp Gammarus pulex on a sandy background showing its laterally compressed sides

Water dock Rumex hydrolapathum pencil drawing

Water horsetail Equisetum fluviatile pencil illustration showing flower and leaf

Watercress Nasturtium officinale with flower and seeds and edible leaves

Fringed waterlily Nymphoides peltata pencil drawing of flowers, buds, and leaves

Water shrew Neomys fodiens on a muddy bank with some vegetation, peering upward and showing its dark fur and feet clearly

Oriental small clawed otter Aonyx cinerea standing erect and clasping onto a half eaten fish

Baikal seal Pusa sibirica cut to white showing mottled skin

Rudd Scardinius erythropthalmus

European bullhead Cottus gobio with background

Northern pike Esox lucius lurking with background of weeds

Brown trout Salmo trutta from chalk stream (with red spots)

Brown trout Salmo trutta view from above showing swimming motion with background of weeds and pebbles