[quote=@MangoJuice] How much older and how much bigger? [/quote] That would be up for arguments, I have yet to write down exact parameters of the serpent itself. I was considering about five or six years of age (having an estimated lifespan of 10-12 years), before they leave the rivers, as for size, a full grown one would reach at most 8 meters of length (Being roughly 3-5 meters long when heading downstream). That was my first thought, but it is very much a work in progress, and is open for ideas and changes.