When we think of intelligent creatures, we often think of vertebrates, or animals with spinal columns and relatively large brains. We don't usually think of invertebrates, or animals without a spine. But invertebrates can be astonishingly intelligent. These animals exhibit surprising feats of learning, memory, and problem-solving using their relatively simple, tiny brains some the size of a sesame seed or even smaller. In fact, some intelligent invertebrates...

Out of this tank, I must be free. I must explore the open sea! Follow Inky the octopus as he escapes from the National Aquarium of New Zealand to the ocean! Based on a true story, Inky the Octopus chronicles the adventure that the real-life Inky might have taken on his escape to freedom in the open ocean!

"Simple text and full-color photography introduce beginning readers to squids. Developed by literacy experts for students in kindergarten through third grade"--

This work is the narrative portion of the book, Sea of Cortez, by the Author and E.F. Ricketts, 1941, here reissued with a profile, "About Ed Ricketts."

"An introduction to marine invertebrates and their physical characteristics, life cycle, behaviors, and adaptations to various habitats. Features include diagrams, fun facts, glossary, resource list, and index"--Provided by publisher.

"This fascinating series takes a very simple look at animal classifications, with each book focussing on a different group of animal. This book is about invertebrates: what they do, how they behave, and how these characteristics are different from other groups of animals. Beautifully illustrated with colorful photographs, the book shows many examples of different types of invertebrates in their natural environment."--

Introduces the physical characteristics, behavior, and habitat of various invertebrates.

Explains how invertebrates have evolved to grow, reproduce, and survive--all without a spine.