Description: Dead or alive, sharks have long been useful to humans. Dead, sharks provide materials that can be used for food, medicine, weapons, tools, & even articles of clothing. Alive, sharks are often studied by scientists for answers to questions concerning sharks' migratory patterns, their use of energy to stay alive, their means of navigation, & even factors that upset them & cause changes in their behavior. With so much to offer scientists interested in learning more about animal behavior, it's no wonder that humans have gone to great lengths to figure out ways to study sharks without harming them.

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