Notes

32 p. : col. ill. Table of contents includes: Backbones or no bones -- Hard and soft coverings -- Sponges live in oceans -- Five parts -- Sea stingers -- Wiggly worms -- Worms in water -- Slugs and snails -- Colorful sea slugs -- Octopuses and squids -- Crusty crustaceans -- Insect invertebrates -- Spiders are not insects.