Easy: they aren't a mermaid. Mermaids are not real. If you are talking about a fictional context you would tell by their tail.
They avoid water.
I don't know. no one does. a mermaid has to tell you.
You tell them that you have been born by a mermaid but you were born with no fins. Tell them your parents were asked to raise you.
Simple: you are not a mermaid. Mermaids are not real, therefore, you cannot be one.
Nobody can. It is impossible to become a mermaid or anything else that is not human. Mermaids do not exist.
It was supposedly a mermaid that someone found. It was a hoax. Someone just cut the body off of a monkey and sewed it to the tail of a fish
The outcast of the little mermaid is that if you fall in love with somebody that you trust you can tell them that you are a MERMAID or you just fall in love and keep it a secret.
I am sorry to tell you that an "actual mermaid" can not answer your question because there are no real mermaids. Think about this for a moment that to be a mermaid a person would have to be half fish and half human. Nature would not allow a mutation like that to live and it would die. Mermaids come from ancient Celtic myths and have never existed. If you want to pretend to be a mermaid go get a tail.
No. People can not change into mermaids. Mermaids do not exist and are make believe. I suppose you have taken a bath in your life. Did you change when you got out of the water? No, you didn't. This is not real and only make believe.
Yes see a psychologistry
No.
No one is a mermaid. They are not real and only come from ancient legends from the Celts and Greeks.Yes we know that BUT IF someone was a mermaid then she would become a major celebrity, would be induced into making movies and supporting political candidates.