This is an event that actually occured in September of 2007 in Berkeley County near Myrtle Beach South Carolina, but has garnered increased attention recently due to the release of some fairly gruesome photographs taken at the scene.
Bill Hedden, 59 was snorkeling in a lake retrieving golf balls when he was attacked by the 12 foot 600 pound alligator. He survived primarily due to the assistance of five nurses who were picnicking nearby. I will let the photographs speak for themselves:
There is no golf ball or mountain of golf balls that can possibly be worth this experience. Once a ball gets wet leave it there.
This will help you keep your ball out of the water.