Georgette Douwma / Nudibranch (Chromodoris willani) with a scale worm. Lembeh Strait, North Sulawesi, Indonesia.

John Waters / Timelapse of flies and a slug on a Common stinkhorn fungus (Phallus impudicus), Mendips, Somerset, UK, July.

Steve Downer / Close up of a Black slug (Arion ater agg.) feeding on a Plantain lily (Hosta) leaf, Birmingham, England, UK, August.

Steve Downer / Black slug (Arion ater agg.) feeding on a dead Yellow slug (Limax flavus), Birmingham, England, UK, August.

Steve Downer / Slug (Species unknown) descending on slime rope from leaf. UK. June.

Steve Downer / Yellow slug (Limax maximus) moving across bridge over road with traffic in the background. Birmingham, UK. June.

Steve Downer / Black arion slug (Arion ater) moving, viewed from beneath showing ripples or pedal waves used for locomotion.

Ingo Arndt / Slug caterpillar moth larva {Acharia nesea} Guanacaste, Costa Rica

Ingo Arndt / Slug caterpillar moth larvae mimicry {Limacodidae} Comoe NP, Ivory Coast

Ingo Arndt / Slug caterpillar moth larva mimics bug {Limacodidae} Guanacaste, Costa Rica

Ingo Arndt / Slug moth caterpillar mimics seed pod {Perola sp} Guanacaste, Costa Rica, Central America

Alex Mustard / Nudibranchs (Doto greenamyeri) newly described species on feather hydroids. Seraya Bay, north coast of Bali, Indonesia. Java Sea.