Acrochordidae:

Heavy-bodied snakes with skin lying loose in folds. Scales small, granular and non-overlapping, giving a rugose texture with the interstitial skin forming bristle-tipped tubercles. Adapted to aquatic lifestyle by dorsally-shifted eyes, valvular nostrils, and a flap for closing the lingual opening of the mouth. Acrochordus granulatus has a laterally compressed tail and lingual salt glands