. . . . . "Electronic books"@en . . "Water beds : sleeping in the ocean"@en . . . "Introduces readers to the variety of sleeping patterns found in marine mammals."@en . "Water Beds : Sleeping in the Ocean"@en . . . "Water beds sleeping in the ocean"@en . . . . . "Juvenile works"@en . . . . "JUVENILE NONFICTION Animals Mammals." . .