"Sharing a Shell" tells the story of a tiny hermit crab who discovers a beautiful new shell and is reluctant to share it with others. However, when a purple blob (a sea anemone) and a bristleworm seek refuge in the shell, the crab learns valuable lessons about friendship, cooperation, and the benefits of sharing. The narrative unfolds in a lively, rhyming text, complemented by vibrant illustrations that bring the underwater setting to life.