What is a shell? -- Creatures with shells -- Living in a whorl -- Snails of the world -- Homes with hinges -- Strange seashells -- Urchins of the sea -- Armor-plated animals -- Shells with 10 legs -- Turtles, tortoises, and terrapins -- A growing shell -- Shells for food lovers -- A pearl is born -- Fossil finds -- Cases for places -- Settlers on the sands -- Life on the rocks -- Residents of the reefs -- Deep-sea dwellers -- Freshwater finds -- Inland inhabitants -- Shells in strange places -- Collecting shells -- Shell shapes -- Shells from the past -- A world of shells.
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