Coast Guard rescues three capsized boaters off Captiva Island following family alert.

The US Coast Guard rescued three boaters off Captiva Island on Sunday after their boat capsized. A family member alerted the Coast Guard around 1 a.m. after last contact at 8 p.m. Saturday. A helicopter spotted the boaters on their overturned boat and guided a boat crew to rescue them. The cause of the capsizing is unknown. The Coast Guard stressed the importance of completing a float plan before boating to aid search efforts.