ALEX HYDE / SCIENCE PHOTO LIBRARY ALEX HYDE / SCIENCE PHOTO LIBRARY
Male regal jumping spider (Phidippus regius) illuminated with ultraviolet (UV) light. Spiders posses fluorophores (fluorescent chemicals) in their haemolymph (blood-like fluid). This causes their eyes and joints to fluoresce under UV light.
Model release not required. Property release not required.