Mother and Calf.
The white triangle in the center of the picture is on the mothers back.
Manatees! We had gone to this area last June but saw none. When I stopped by late morning it was like whale watching, Here the blow and look. I think I saw two that day. The next day we showed up earlier and followed three of them around the shoreline before they headed for deeper water.
Manatees are sometimes called sea cows. They can grow to more than 12 feet long and weigh half a ton. This being in Florida these were West Indian Manatees.