A tourist was bitten  by a shark on Maui's  north coast. 

A tourist was bitten by a shark on Maui's north coast.

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A visitor was left in "critical condition" after a "severe bite" by a shark while swimming off Maui's north coast on Saturday. The event caused Labor Day beach closures.

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According to a DLNR press release, the event happened Saturday in Paia Bay. The 51-year-old

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Frenchwoman was swimming 100 yards off shore in murky water, according to police.

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According to Maui County's social media, witnesses spotted the lady "in trouble and required aid."

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Bystanders assisted Medic and Fire services treat the woman's wounds, authorities said.

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Maui County's communications director said the beaches reopened Monday morning.

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John Titchen, Honolulu's Chief of Ocean Safety, told USA TODAY that shark attacks are "rare or

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sporadic." Channels, ports, and murky water attract more sharks near the islands.

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