During our Florida mini-vacation we visited the Manatee Observation and Education Center in Fort Pierce. When we arrived, we appreciated the manatee artwork on a bench and on the walkway to the entrance.
Inside, there was an optional scavenger hunt for kids, to encourage them to observe the different types of fish inside the building. Our three-year-old loves this sort of challenge, and the possibility of earning a little prize. There were also a few fun crafty activities for kids, and a short movie about manatees and the observation center. The best part of visiting the observation center, of course, is the chance of seeing wild manatees in the creek behind the building. The observation center has beautiful views of the creek and Indian River Lagoon, and we were lucky enough to see three manatees relaxing in the creek!
Admission to the manatee center was only one dollar per person (!), so I highly recommend visiting if you are in the Fort Pierce area.