There are a few locals here that look similar to me. And because one is not to be taken lightly I give them a wide berth. Alligators are much safer.
Cottonmouth; a large, dangerous semiaquatic pit viper that inhabits lowland swamps and waterways of the southeastern US. When threatening it opens its mouth wide to display the white interior.
From the low angle above it’s hard to tell the shape of the eyes and head. It could be a water snake.
Now from this other photograph the head has a triangular shape. Not good. Vipers have large fangs that are pulled back until threatened.
‘Total length per one study of adults, was 65 to 90 cm (26 to 35 in). Average body mass has been found to be 292.5 to 579.6 g (10.32 to 20.44 oz) in males and 201.1 to 254.1 g (7.09 to 8.96 oz) in females. Occasionally, individuals may exceed 180 cm (71 in) in total length.’
In general it’s a big snake.
These photographs were taken on a small dirt road in a wildlife management area. He was just getting some sun. We stopped, looked, and went on our way.