"The lure of the life that inhabits the ocean's reefs and open waters is no secret to scuba enthusiasts and snorkelers who enjoy gazing upon this wonderful world through their dive masks. This practical and comprehensive guidebook for divers, naturalists, and ocean lovers identifies the most commonly encountered animals and other organisms in the tropical marine environment and identifies them in more than 1,000 ... color photographs to provide a window into this magnificent world. This updated edition features new photos, 33 new species profiles, and an extended chapter about the state of the ocean and reefs on our rapidly changing planet"--