Blue Spring State Park is a 2,700-acre (1,100 ha) park located in Volusia County, Florida, United States. The park is best known for its crystal-clear spring, which is a popular destination for swimming, snorkeling, scuba diving, and manatee watching. The park also offers a variety of other recreational activities, including hiking, biking, camping, and fishing. The spring is home to a variety of marine life, including fish, turtles, manatees, and alligators. The water is so clear that you can often see fish swimming up to 100 feet (30 m) away.