They like to sunbathe, can't blame them.

This was two miles from where people go to sunbathe, and they were oblivious to the existence of this system.

And the good thing about perceiving ultraviolet is that you can hear if it's a good day or a bad day to sunbathe, because ultraviolet is a dangerous color, a color that can actually kill us, so I think we should all have this wish to perceive things that we cannot perceive.