Two people were bitten by sharks on Hilton Head Island within one week, and a 9-year-old girl was seriously injured in Florida. Experts stress that shark attacks remain rare. Another danger during the summer outdoor season is lightning and several incidents have been reported this month. The latest one happened Tuesday afternoon. Emergency services responded to a call at Lake Murray Dam, located around 15 miles west of Columbia, South Carolina, where 20 people were hit by a single bolt of lightning. And a beach umbrella turned dangerous in Asbury Park on Wednesday morning when strong winds sent it airborne, impaling a lifeguard as she set it up.

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