Nerodia clarkii clarkii Gulf Salt Marsh Snake Barry Mansell photo.
Adults are grayish with four dark longitudinal stripes on their body, two on each side.
The belly is reddish-brown to gray with 1 or 3 rows of light spots. The scales are keeled , and there are 21-23 dorsal scale rows at midbody. The pupil is round. Juvenile coloration is similar to adults. In Florida, it is found along the Gulf coast from central Florida northwest to the tip of the panhandle.