See Manatee at Blue Springs State Park

Blue Spring State Park is a state park located west of Orange City, Florida in the United States. The park is a popular tourist destination; available activities include canoeing, SCUBA diving, kayaking, fishing, camping, hiking, wildlife watching, and swimming. The spring is the largest on the St. Johns River and serves as the winter home of many Florida manatees that come up the St. Johns to bask in the relatively warm waters (constant 72 Fahrenheit/21 Celsius) of the springs. Over 100 million gallons of water flow out of Blue Spring into the St. Johns River every day.
The park features Fifty-one campsites (27 have electric) and they also have six cabins available for those who wish to stay at the park. Swimming is very popular on hot summer days, but is banned during Manatee season. Qualified Scuba divers can descend into the spring cave in season as well. Picnicking is a popular pastime, with pavilions available for groups. The old Thursby plantation house is being maintained and has historical displays. Various wildlife besides manatees can be seen as well. Hontoon Island State Park is a short paddle down the St. Johns River.
Blue Springs State Park is located at:
2100 W. French AvenueOrange City, Florida 32763
(386) 775-3663
You can visit their website at: http://www.floridastateparks.org/bluespring/