I don't think Mermaids are a myth. They are water creatures just like fishes with head , upper body and the tail of a fish
I'm on the fence.  They seem like they could be real.
You are on the fence because  they are used in stories  in alot cultures worldwide, including the Near East, Europe, Africa and Asia. But they have been cases of Mermaid floating around shores and fisherman nets. Check youtube
I will have to look at that.  So, if there are mermaids, are there also mermen?
Yes, although no strong widely accepted evidence. But there have really been sightings, there are examples from Isreal and Zimbabwe
That's interesting.  What do you think we will see first, great white sharks mating, or mermaids and mermen mating?
by Christopher Columbus during his exploration of the Caribbean, may have been inspired by manatees and similar aquatic mammals. While there is no evidence that mermaids exist outside folklore, reports of mermaid sightings continue to the present day, including 21st-century examples from Israel and Zimbabwe.
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" (1836). They have subsequently been depicted in operas, paintings, books,
Mermaid
In folklore, a mermaid is an aquatic creature with the head and upper body of a female human and the tail of a fish. Mermaids appear in the folklore of many cultures worldwide, including the Near East, Europe, Asia, and Africa. The first stories appeared in ancient Assyria, in which the goddess Atargatis transformed herself into a mermaid out of shame for accidentally killing her human lover. Mermaids are sometimes associated with perilous events such as floods, storms, shipwrecks, and drownings. In other folk traditions