I love DK Eyewitness travel guides, they're thorough and colourful. But I wanted a guide book that would recommend all the best or most popular dive sites around the world, I was hoping for a guide book broken down in oceanic regions of the world with a single or double page of places to dive, recommended dive sites, what you can expect to see there, etc. Instead, the first three quarters of the book is about diving (equipment, course, boyuancy, technics) all things you would have learned in your dive course in the first place - so absolutely useless. The last quarter of the book remotely attempts to do what I wanted, but it's nowhere as good as what I had in mind. I'll just have to do my own research and dive all over the world and give them the content for a good Scuba Diving Guide.