Mermaids are mythological creatures, and thus no scientific information exists about how they would produce offspring. This is because there is no definitive proof of their literal existence in nature.
A mermaid is a fabled marine creature with the head and upper body of a human being and the tail of a fish. Mermaids are present in the mythologies and folklore of many cultures and civilizations. In Greek mythology and other European traditions, mermaids were sometimes referred to as sirens. They possessed magical powers and sometimes sang as a way to seduce people. In Homer's "The Odyssey," mermaid sirens try to lure Odysseus and his crew to their deaths.