water moccasins-learn something new every day.
Likely makes no difference relative to being bitten by one of these:
where used to be according to the taxonomists that deal with american pit vipers, three subspecies of water moccasins or cottonmouths if you prefer.
Well now there are considered to be be two separate species:
Agkistrodon piscivorus (Lacépéde, 1789),[42] northern cottonmouth[46]
Agkistrodon conanti Gloyd, 1969,[44] Florida cottonmouth[46] (south Georgia and Florida peninsular
Subspecies and taxonomic changes
I am not sure if there are any differences relative to being bitten by them. And the closely related copper head that was also thought to have three subspecies is now said just to be Agkistrodon contortrix
For many decades, one species with three subspecies were formally recognized: eastern cottonmouth, A. p. piscivorus (Lacépède, 1789);[42] western cottonmouth, A. p. leucostoma (Troost, 1836);[43] and Florida cottonmouth, A. p. conanti Gloyd, 1969.[44] However, a molecular (DNA) based study was published in 2014, applying phylogenetic theories (one implication being no subspecies are recognized), changing the long-standing taxonomy. The resulting and current taxonomic arrangement recognizes two species and no subspecies. The western cottonmouth (A. p. leucostoma) was synonymized with the eastern cottonmouth (A. p. piscivorus) into one species (with the oldest published name, A. p. piscivorus, having priority). The Florida cottonmouth (A. p. conanti) is now recognized as a separate species.[45]