For years, researchers have tagged sharks in the world's oceans to learn where they go, how they migrate and where they feed. While these tags have given us a wealth of data about their lives, many questions still remain. One of them is: why do some individuals travel vast distances while others stay closer to home? A new study published in the journal PLOS One may have the answer. It suggests that a shark's wanderlust may be due to the amount of energy stored in its body.

For years, researchers have tagged sharks in the world’s oceans to learn where they go, how they migrate and where they feed. While these tags have given us a wealth of data about their lives, many questions still remain. One of them is: why do some individuals travel vast distances while others stay closer to home? A new study published in the journal PLOS One may have the answer. It suggests that a shark’s wanderlust may be due to the amount of energy stored in its body.

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