Wild Wonders of Europe / Möllers / Large male European / Noble crayfish (Astacus astacus) on ground by a small creek, Leszczowate, Poland, September 2011

Wild Wonders of Europe / Möllers / Man holding a large male European / Noble crayfish (Astacus astacus) that he caught by hand in a small creek close to his home town, Leszczowate, Ropienka, Poland, September 2011, model released

Willem Kolvoort / European freshwater crayfish (Astacus astacus) crossing lake bed, Albania, Eastern Europe, May

Michel Roggo / Galician crayfish (Astacus leptodactylus) Europe

Michel Roggo / European crayfish (Astacus astacus) Europe

MYN / Gil Wizen / Huge terrestrial flatworm (Bipalium kewense), Mindo, Ecuador, March. meetyourneighbours.net project

Pascal Kobeh / Glorious flatworm (Pseudobiceros gloriosus) New Caledonia, Pacific Ocean.

Georgette Douwma / Kaleidoscopic image of Brittlestar (Ophiothrix species) on soft coral on which there are Acoel flatworms (Waminoa species). Rinca, Komodo National Park, Indonesia.

David Hall / Polyclad flatworm (Pseudobiceros uniarborensis). Komodo, Indonesia.

Magnus Lundgren / Wild Wonders of China / Free swimming marine flatworm (Tubellaria sp) Green Island, a small volcanic island in the Pacific Ocean, Taiwan

Magnus Lundgren / Wild Wonders of China / Yellow flatworm (Tubellaria sp,) Green Island, a small volcanic island in the Pacific Ocean , Taiwan

Georgette Douwma / Glorious flatworm (Pseudobiceros gloriosus). West Papua, Indonesia. Indo-West Pacific.

Georgette Douwma / Flatworm (Pseudoceros laingensis) West Papua, Indonesia. West Indo-Pacific.

Duncan Murrell / Land Planarian - flat worm, (Bipalium sp.) on a wild banana tree, Gunung Mulu National Park, UNESCO World Heritage Site, Sarawak, Malaysian Borneo.

Georgette Douwma / Racing stripe flatworm (Pseudoceros bifurcus) Puerto Galera, Philippines.

Georgette Douwma / Flatworm, probably Pseudobiceros sp, West Papua, Indonesia.

Emanuele Biggi / Hammerhead worms (Bipalium sp) on leaf, Sarawak. Borneo.