Rip currents account for 80% of beach rescues, and can be dangerous or deadly if swimmers don't know what to do. Before heading to the beach, one should check local beach forecasts and always swim near lifeguards. Beachgoers should also look for any warning signs or flags. If a swimmer happens to be caught in a rip current, stay calm. The most effective way to break from a rip current is to float. Part of the "Danger Zone" series.