Two people were recently killed in separate shark attacks, but how common is this?

The first attack occurred when a surfer, a 56-year-old Hawaiian man was paddling in Honolua Bay on Dec. 8, according to the Hawaii Department of Land and Natural Resources. In the second attack on Dec. 10, a 38-year-old woman died after a shark tore off her leg 500 feet (150 meters) from the shore at a popular beach in St. Martin in the eastern Caribbean, according to The Associated Press

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