So just what do the manatees do with this?
The back scratcher is designed to sink to the bottom so that the manatees can rub various parts of their body on the bristles. They have also been seen carrying the entire device around the tank with their pectoral flippers.
1 8-foot length of 8-inch diameter PVC pipe
2 8-inch PVC "T's"
4 8-inch PVC end caps
4 industrial strength shop brooms