Is it possible to be a mermaid?

No, you can not. Think about this for a moment. This would mean that you would be half fish and half human. Something like that couldn't live in the real world. Mermaids are all made up and come from myths, TV shows, games, and movies. If you want to pretend to be a mermaid go buy a tail.
Nope sorry I wish they could to but we all have things that we wont to happen and its impossible to every once and a while.