Mermen are mythical creatures often depicted as having the upper body of a human and the lower body of a fish. They are commonly found in folklore and legends across various cultures, including Greek mythology and Norse mythology. Mermen are typically associated with the sea and are sometimes portrayed as guardians of underwater treasures. In many stories, mermen possess magical abilities and can communicate with marine life. They are often depicted as both benevolent and malevolent, depending on the tale. While mermen are less commonly featured than their female counterparts, the mermaids, they remain a fascinating part of maritime mythology.