Photographer Mark Blum executes a sterling idea for a book: a collection of stereoscopic images of deep-sea fish and reptiles, with 3-D glasses bound right into the book"s cover. The result is an entertaining you-are-there tour of the ocean deeps that appeals to all ages. Some images are of places that are perilous of access, such as a submarine labyrinth off Borneo full of dolphin and turtle skeletons. Others, boasting populations of anemones and barracudas, are easier to get to--for anyone with an aqualung, that is. No matter where they"re set, the photographs impart a wonderful sense of adventure and scientific discovery.