aquatic

Water horsetail showing two sterile stems and two fertile stems, one with leaves and one without.  Also showing cross section of the stem, and the rhizome.

Parrots Feather Myriophyllum aquaticum showing rosettes of leaves below water.  Also showing detail of the tiny flowers, and a vegetative and flowering spike.

Flowering rush Butomus umbellatus with details of individual flower, leaf cross section, stamen before and after dehiscence, and seedhead

Water plantain Alisma plantago-aquatica with details of fruit individual seed and one flower

Stonecrop or New Zealand Pigmyweed Crassula helmsii showing two of its three different growth habits

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

Mayfly Ephemera vulgata adult side view showing wing venation with markings, green body, and lack of mouth parts Perched on a stem, cut to white

Pond skater Gerris lacustris

Stonefly larva Plecoptera cut to white

Stonefly larva on dand and pebbles river or pond or stream substrate, with drop shadow

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

Nautilus pompilius pen and ink stippled illustration

Caddis fly Trichoptera larvae in pebble case underwater on sandy substrate

Coral cross section pen and ink monochrome illustration including a scene of a coral reef with a detailed close up of the internal organs of a typical coral polyp

Euglena cut to white showing green photosynthetic colour and organelles

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

Diatom group showing diverse shapes and colours of these organisms

Great diving beetle Dytiscus marginalis showing dark green colour and yellow thorax margin, blue background to show sub aquatic habitat

Lesser diving beetle Acilius sulcatus pointing downwards with water weed behind, hind legs outstretched to show how they resemble oars

Screech beetle Hygrobia tarda dorsal view, floating in the water with a sprig on water weed behind