The swimmer was injured in the right leg and lower back and was treated at the beach by an ambulance crew, then transported by ambulance and air to a hospital, according to a a news release from the National Park Service Outer Banks Group.

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A witness says the man was bitten on the lower back, buttocks and ankle while trying to get his children out of the water.

>>Mobile users can watch a short video of the man on the beach at Fox4kc.com.