Eating Carrots Helps You See In The Dark!
Wrong, but this misconception helped the Allies win World War II. The British came up with a type of radar that helped them see Nazi planes at night, but didn't want the Nazi's to figure out how they were suddenly shooting down bombers. So they ran a disinformation campaign about how carrot-heavy diets were helping their soldiers see better at night.
So what you're saying is that you always have to go when around jellyfish.
radar DOES NOT DEPEND on sight - you dont "see" except on your screen - radar is based on "sound" NOT "sight" - day or night - radar works.