Touching A Toad Will Give You Warts!
This misconception is a "wart" on society's understanding of biology. People get warts because of viruses that are unique to humans. Toads have bumps, but they're not warts, that's just what toads are shaped like. So not only is this wrong, it's also shaming innocent toads.
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.