tubercles

Flipper of Humpback whale Megaptera novaeanglicae showing tubercles

Humpback whale Megaptera novaeanglicae shown side on. Illustration from “30 Animals that made us smarter” by Patrick Ayree (BBC Books)

Garden snail Helix aspera with grey body and yellow and brown shell cut to white

Garden snail Helix aspera line drawing in pen and ink cut to white

Common British Garden invertebrates including violet ground beetle, silver y moth, earth worm, worm, flesh fly, honey bee, ladybird, and small tortoiseshell butterfly with written annotations on each

Woodlouse Porcellio scaber illustration showing the rough crey surface and segmented body. Cut to whtie