Wacky Wednesday Science Fact: Mythical Mermaids

Our list of the Top 7 Mythical Creatures explains why humans are so obsessed with merfolk—the oldest legends date back more than 3,000 years! Unfortunately, a human-like creature who could survive long periods under water would need a thick layer of blubber or hair for protection. A mermaid or merman built to survive would be very hairy, obese and have stubby arms.