I wonder what the evolutionary processes were that resulted in the "visible" spectrum being as we know it. Perhaps the absorption spectrum of water, with a distinct notch right there? Marine life being able to see through water would seem like a large benefit.
It's also of note that evolution had a limited amount of materials from which it could create focusing lenses, and so vision *had* to exist in Water absorption's notch. (And also that pit based sensors exist on many animals to get basic directional IR sense, to show what evolution came up with without water based lenses.)
