The Manatee River is a 36-mile river flowing into the Gulf of Mexico. Cruise the Manatee and Braden Rivers to fish, visit popular restaurants, see unique water-view houses and gently explore natural habitats for Florida’s local animals including: alligators, manatees, dolphins, bald eagles, peregrine falcons, herons, bass, bluegill, catfish, gar and sharks. Manatees are usually seen best in the early cool months and bull sharks are more often spotted closer to the outlet in brackish water. See a map below of the Manatee River. Sunset Boat Rental is located at Regatta Point Marina which in directly on the Manatee River.