A mermaid is a legendary aquatic creature with the head and upper body of a female human and the tail of a fish. The male equivalent of the mermaid is the merman, also a familiar figure in folklore and heraldry. Mermaids have been a popular subject of art and literature in recent centuries, such as in Hans Christian Andersen's well-known fairy tale "The Little Mermaid." When coming up to cat names, there are lots of mermaid cat names from legend and lore that you can consider.