This book is, in the words of my 8-year-old son, "incredible"! The layout is very easy to understand, the photographic plates that show the various species in related groupings are marvelously well-done. The text is informative without being pedantic, and the plethora of full-color photographs and excellent illustrations make the book a joy to use. If you are going to the Galapagos, BUY THIS BOOK! Better yet, buy more than one, because you will wear it out so fast flipping pages and grabbing it out of your travelling companions' greedy hands. If you aren't going, but want to learn about the fauna of this unique archipelago, you will find no better resource.