Identificaciones de jameskamstra

Using this ID as a place holder. I remember thinking this was a fern-leaved plant (but not a true fern) when I first saw this but can’t remember the reason now.. maybe a weak stem from the base. Could be an escaped garden plant. Looking for inputs

Brian took Emily Johnson and me in our small boat to the bay. We had to row in to the shoreline because of limestone under the water but close to the surface. There it was when we jumped out of the boat! Second record for CKL, after Emily Lake.