This is the definitive guide for marine invertebrates. It is a comprehensive 500-page reference that details with over 2,000 stunning color photographs taken in their natural habitat. The guide focuses primarily on mobile species—the fascinating "critters" that divers love to hunt for—including a wide array of crustaceans, molluscs, worms, and echinoderms . However, it also includes an overview of attached marine animals, providing a holistic picture of the reef ecosystem.
: Many species, like the cleaner shrimp ( Lysmata amboinensis ), set up "cleaning stations" where fish queue to have parasites removed. This is the definitive guide for marine invertebrates
: Hexacorals that secrete a rigid calcium carbonate skeleton. They are the primary builders of the reef. and echinoderms . However