It's hard to tell. When I blow up the pics they become too grainy to really see their heads. From the length of them they appear to be water snakes of some kind.

From what I can make of their heads, they are narrow, not wedged like a viper. Cant make out the eyes either. Moccasins are typically shorter and stockier. Around here anyway. A 16" moccasin will be as big as around as my wrist and have slitted pupils. I think those are all long and skinny and appear to have round pupils.

I killed 13 moccasins in two weeks after we got flooded in '16. They dont tend to spook. If anything, they are very aggressive and will challenge you.

.10 surface acre pond, 10.5 foot deep. SW LA. The epitome of a mutt pond. BG, LMB, GSF, RES, BH, Warmouth, Longear Sunfish, Gambusia,Mud Minnows, Crappie, and now shiners!!...I subscribe!!