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In the underwater wilderness of the world's oceans, sharks are the top predators. They are swift swimmers capable of incredible bursts of speed, with flexible bodies and razor-sharp teeth designed for battle. Superior senses of smell and hearing, and the ability to detect electrical fields, help sharks locate prey from great distances, in darkness or hidden in the sand of the ocean floor. While many species are fierce carnivores, few attack humans and fewer still do so unprovoked. In Sharks 2009, world-renowned underwater photographers create a yearlong gallery of images that reveal sharks in their natural habitat and as they are rarely seen. Informative captions shed further light on these compelling creatures.