On July 21, 1992, The Governor and the Cabinet adopted a Manatee Protection Plan for Indian River County which included a number of boat speed regulatory zones designed to minimize the number of accidental strikes by boats to manatees. The plan is now Florida Law Section 68C-22.007 F.A.C. 

Indian River County Manatee Protection Zone Law.pdf

Visit the Florida Fish and Wildlife Conservation Commission website to find out more about waterway regulations.