Well I think they do exist. I watched one video where scientists
were using sonar for something while in a submarine like thing.
Btw, sonar is very high frequency sound waves which can kill marine
creatures and make whale's ear bleed. They were filming a video
when a mermaid hand like a skeleton joined together with see
through skin touched the glass of the submarine and ran off. I
probably think they do exist but stay away and deep in the ocean in
order to avoid human contact. One more thing, I don't think they're
pretty or nice to look at beings.
