I google for "__animal name__" of "__location__" and it works quite well http://www.virginiaherpetologicalsociety.com/reptiles/snakes/snakes_of_virginia.htm  https://en.wikipedia.org/wiki/Northern_water_snake http://www.chesapeakebay.net/fieldguide/critter/northern_water_snake  Northern Water Snake baby ... they are strongly marked compared to the adults.

This is not a "coralsnake" in that it is not a venomous elapid snake like our US "Coralsnakes". The red next to yellow "rule" 1. only works in the US, except that it only works some of the time in some areas of the US. Some harmless snakes are red/yellow/black and have the red-against -yellow patterns. 2. only works some of the time in the US. Coralsnakes, like all other living species, are variable. I have seen coralsnakes that were almost solid black, had no black pigment at all, or had no yellow bands at all. Color is only reliable for identification if you don't mind being wrong some of the time, and in that case what's the point of the rule?

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I have never encountered a snake coming after me. They feel the vibration of humans walking on the ground and skedaddle . While I've been bitten by three dogs and two cats during my life, I've never had a wild animal attack or bite me. My only concern would be my dogs getting involved but I simply take them inside the house for a while and the snake then goes on its way. A garter snake in May in that same area. I suspect he caught the frog because I didn't hear it after that.