Jurgen Freund / Carapace of a Green turtle (Chelonia mydas). Sipadan Island, Semporna, Sabah, Malaysia

Pete Oxford / Radiated Tortoise (Geochelone radiata) midden of carapaces, vulnerable, Madagascar

Nick Upton / Moulted crarapaces and legs of Common spider crabs / Spiny spider crabs (Maja brachydactyla / Maja squinado) and moulted carapaces washed up on Rhossili Bay, with the Worm's Head in the background, Th...

Nick Upton / Moulted carapaces and legs of Common spider crabs / Spiny spider crabs (Maja brachydactyla / Maja squinado) washed up on sandy beach. Rhossili Bay, The Gower Peninsula, UK, July.