This may be the only even remotely cooperative grebe I have ever encountered. They have this irritating habit of diving just as you get ready to shoot.
One second they are there, and then ... only a slowly widening ripple ring marks the spot.
I delete a lot of ripple shots.
These shots were taken on a chilly day in December and the turtles were enjoying some late day sunbathing. I did not see the first gator.
Like a lot of waterfowl oriented NWR's, St. Marks has a number of shallow impoundments that are drained and filled for the management of migratory ducks and other waterbirds. This makes for nice walking opportunities since the dikes that form the ponds are kept mown and provide ready access to the pond banks.
This clever overflow section allowed this impoundment to drain into a nearby saltmarsh creek when it was over full pool stage.
The St. Marks Light is a quaint historical site inside the refuge. You can walk around it, but not enter it.
You can learn more about this refuge by going here.