floating

Water fern Azolla filiculoides shown floating with water repelling properties

Common duckweed Lemna minor showing plant growing and close up of flower

Sketchbook study of these similar invasive aquatic plant species, with botanical details, completed for FOR Sweden

Sketchbook study of this invasive aquatic plant, with botanical details, completed for FOR Sweden

Sketchbook study of the invasive vs the native aquatic plant, with botanical details, completed for FOR Sweden

Yellow waterlily Nuphar luteum floating on water with developing “brandy bottle” seed flask

White waterlily Nymphaea alba shown floating on water with lily pads

White & Yellow waterlily Nymphaea alba & Nuphar luteum comparison, shown in water.

Nautilus pompilius pen and ink stippled illustration

White waterlily Nymphaea alba flower against a darker floating lily leaf, pencil

Pondweed Potamogeton praelongus with seeds held erect out of the water and lanceolate leaves underwater

Greater bladderwort Utricularia vulgaris pencil drawing showing flower above the water and the network of veins underwater with the bladder traps to catch aquatic microorganisms

Bog pondweed Potamogeton polygonifolius with fruiting spike emergent above the water, floating leaves and more lanceolate leaves underwater

Sea otter Enhydra lutris floating in the sea on its back, holding a clam and favoured stone, and peering at the viewer

Water lily leaf showing damage from caterpillars of china mark moth who nibble the edges of the leaves and make folded floating ods from the leaves. Blue water background and inset detail of the caterpillar,