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The True Nature of Sharks

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As a life long observer of wildlife, I recognized as soon as I began meeting wild sharks that their behaviour was very different from that of the mammals and birds we are more familiar with. So for fifteen years I spent most of my spare time watching them underwater to learn as much as I could about what they are like as animals and individuals. 
For seven of those years, I kept track of hundreds of individual reef sharks using a lagoon, and could recognize more than three hundred on sight. Studying them as individuals opened a new dimension on their lives, revealing their companionships, their emotional responses, and the way they socialized. These studies were supplemented by observing other species--tiger sharks, lemon sharks, and bull sharks--for shorter periods of time.
Many of the actions that sharks will take indicate that they are thinking, rather than acting on instinct alone, and it became clear that they have been badly underestimated by science. No one in the marine scie…