OK K.O.! Let's Be Heroes - beach day

Worth remembering her mom's a vampire, so I'm kinda curious what "rules" we're using here for her to be at the beach. Beach at night time, or is this a case of "oh the sun doesn't kill me, I'm just a little more sensitive than normal"?

I legit saw someone recently come up with an interesting theory that a black vampire actually wouldn't be very sensitive to the sun because darker melanin helps against UV rays.