Wasn't sure what to expect when ordering, but am very happy with the purchase. The maps are great! I have lived in Guam & find that the info in the book is very helpful. I'm still learning my way around the dive world here & now know where some of these places are that people are talking about. It has also helped plan our next dive trip to other islands. Great info on Palau, Chuuk, & Yap. So much to see & so little time!!!