Sea Isle Revitalization, an organization made up of local business professionals, will sponsor a free trolley service on Saturday, February 19, during Sea Isle City’s 2011 Polar Bear Plunge. The service, which will be available at no charge to riders between 10:00 a.m. and 8:00 p.m., will include two trolleys running along Landis Avenue (29th to 93rd Street) and also along Park Road. The polar bear plunge attracts thousands of visitors to Sea Isle City every year.