Kids dive into a weird and watery world where they meet prickly sea stars, gooey jellyfish, and slimy sea slugs in No Backbone! The World of Invertebrates. This beautifully designed introduction to marine invertebrates will delight children with large, colorful photos and clear, grade-appropriate text that engages emergent readers as they learn about the natural habitat, physical characteristics, diet, and behavior of these unique underwater animals.