Thanks for the replies and comments. The alligators crawl up on these platforms or the bank to bask in the sun after they have eaten. They need the heat to digest their food. So, having eaten, they pose no threat to the turtles. Gators will eat turtles but the turtles must be size appropriate. The larger gators will eat anything. This is a juvenile gator pictured and these turtles are too large for it to eat. Give it a few more years...
I almost stepped on these two - the gravel is the path. They are three feet long.
On another visit to the swamp I counted 17 in an adjacent pond. But the real lure of the swamp is the bird life - great white egrets, ibis and the great blue heron abound. There are so many nests and birds the noise is incredible. Also cormorants, anhinga, eagles and all sorts of hawks and varieties of heron and ducks live in some sort of harmony although I have witnessed a few territorial fights.