No.
No, being a werewolf and being a mermaid are two completely different things.
There is no cheat for being a mermaid (which SUCKS) but there is a mod on The Sims Mods.
No. Mermaids are not real. I wanted to be a mermaid when I was little but they are obviously just a children's character. If you want to be a mermaid, you can work at Disneyworld or Disneyland and be the little mermaid!
No such thing.
You can't actually become a mermaid but you can download mermaid outfits, that is the closest you can get to being one.
Yes
Being fantasy creatures, it depends on what the author has decided and written into the story
Mermaid spells don't work because spells, mermaids, and magic are not real. They are things that exist only in fiction.
There are no real mermaid spells. None of them work because there are no such things as magic, spells, or mermaids.
You don't have to worry about it since you will never be a mermaid. People can not change shapes or become mermaids. Mermaids are not real and are make believe. You will not change into a mermaid. I can promise you that.
No. Mermaids are imaginary. Sorry!