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Researchers hope to unravel mystery of shark behavior

Beachgoers on Massachusetts' Cape Cod have spotted several sharks this summer, but when Chris Fischer and his crew went looking for the great whites here this month, there were none.

The researcher and his crew are tagging the fish with a GPS device to their dorsal fin and taking blood and tissue samples before releasing her back into the deep. Now the researchers, and anyone with an Internet connection, can follow her movements in real time online on the “shark tracker” on

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