Jim Buentgen scans the brush with a special flashlight on evening hikes.  He often finds what others miss, hiding inplain sight:  scorpions.  The nocturnal arachnids are only two or three inches long at maturity and their brown or tan bodies blend in with surrounding brush. But under a black (ultraviolet) light, they fluoresce a bright turquoise color.

Photo by Kevin Schlunegger