Sharing a Shell by Julia Donaldson
The tiny hermit crab loves his new shell. He doesn't want to share it -- not with a blobby purple anenome and a tickly bristleworm. But life in the rock pool proves tougher than Crab thinks, and soon he finds he needs his new housemates in this rollicking story of sea, shells and friendship.
Sharing a Shell was the first collaboration between Julia Donaldson and Lydia Monks; the bestselling team behind Sugarlump and the Unicorn and What the Ladybird Heard.