I think that there are many, many species of animals living in the deep ocean that we are not even aware of. I believe that some sort of half mammal/half fish may exist, but not in the fairytale kind of way. I don't think it's that far-fetched to believe that there may be a fish with webbed hands instead of fins. It's simply evolution. So, yes, I believe there is something like a "mermaid" down there.
Well that is why I had asked that question as I saw a show on Discovery about it and they claim to have spotted a creature with webbed hands and very similar to the mermaid myth however it certainly was not attractive LOL
I think mermaids are just a figment of our fertile imagination. A beautiful woman living in the sea sounds appealing until you think deeper. What do you want from a woman who is a fish from the waist down?