diving

Red sea coral reef scene showing clown fish, sea urchins, star puffer fish, brain coral, squirrel fish, sea anenome, and lettuce coral

Blue whale Balaenoptera musculus illustration from A Life on Our Planet by David Attenborough

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

Water vole Arvicola amphibius pencil sketch of stream bank and a vole swimming underwater emitting air bubbles

Water vole Arvicola amphibius tracks footprints

Water vole Arvicola amphibius showing how fluffy and formless these creatires are, in profile on sandy bank with background riparian vegetation

Water vole Arvicola amphibius showing how fluffy and formless these creatires are, in profile on sandy bank with background riparian vegetation

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

Peregrine falcon Falco peregrinus cut to white

Puffin Fratercula arctica standing on tufts of grass facing left

Goosander or Common merganser Mergus merganser on a lake with sundew, rocks and a beach in the foreground, scrubby vegetation behind, set in northern Wales uplands.