Hardback -In his latest eye-popping work of picture book nonfiction, Caldecot Honor-winning author-illustrator, Steve Jenkins explains how for most animals, biologically, eyes are the most important source of information about the world. The simplest eyes
clusters of light-sensitive cells
appeared more than one billion years ago, and provided a big survival advantage to the first creatures that had them. Since then, animals have evolved an amazing variety of eyes, along with often surprising ways to use them.