There are more than 400 kinds of sharks, and their shapes and sizes are all different. While a few species live up to their bloody reputation, most sharks don't pose any danger to humans. In fact, they have fascinating skills and features that should make people take notice, not take off! Close-up photos and funny cartoons help illustrate how our understanding of sharks has changed since ancient times. Find out how scientists make heads or tails of the many different species, and what they know of shark anatomy, behavior, and reproduction. See how the species measure up to each other in a one-of-a-kind fashion line-up, and test your knowledge with a colorful quiz.
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