With roughly 80% of our oceans unexplored, new species are constantly being discovered. But there is one species that has been sighted in different corners of the world since the beginning of time. Mermaids are half-fish, half-human, and all mystery. Do these creatures really exist, and if not, why are stories of them embedded in so many cultures?Learn more about your ad choices. Visit podcastchoices.com/adchoices