Related Program: NatureNotes Florida Cottonmouth By Rudy Mancke • Jul 26, 2018 Related Program: NatureNotes TweetShareGoogle+Email An Eastern Cottonmouth snake, agkistrodon piscivorus. Geoff Gallice, Gainesville, FL; via Wikimedia Commons This subspecies is not as common as the Eastern Cottonmouth, which is widespread on the Coastal Plain. Listen Listening... / 1:00 Listen... NatureNotes is a production of South Carolina Public Radio. Tags: NatureNatureNotesSCETV Appscetv.orgTweetShareGoogle+EmailView the discussion thread.