Hammerhead sharks’ diets may affect if they roam or stay home

Great hammerhead sharks are known for their long migrations, but scientists have now discovered that some individuals in the Bahamas instead spend all year snacking without leaving their plentiful and protected home waters. Why would some individuals take off if others are happy to stay put?

The answer to this mystery might be their favorite foods, researchers report March 21 in Frontiers in Marine Science.

Great hammerheads (Sphyrna mokarran) have been recorded making 3,000-kilometer journeys between Bimini, the Bahamas and offshore Virginia. But tracking tags and tissue samples from hammerheads in Andros, Bahamas, reveal that the country, designated as a shark sanctuary in 2011, could be more than just

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