This is . . . a lizard. I have no idea what kind, but up close it looks kind of like The Thing, doesn’t it? I deliberately oversaturated the picture so you could see the interesting blues and teals reflecting off its scales. Note that I took this on my ill-fated trip to photograph Ortega Falls, so the trip wasn’t a total waste.
UPDATE: It’s a Western fence lizard. In this picture, however, it’s on a rock, not a fence.