I know this is a weird question to ask but “are mermaids real? If yes how do they look like? What do they do?

Question: I know this is a weird question to ask but "are mermaids real? If yes how do they look like? What do they do?
- Keywords:
  marine,
  mermaids,
  sea
Asked by to Del, Catherine, John, Krishna, Mo Rassul on 14 Mar 2014. This question was also asked by .
- Adelle Thrower answered on 14 Mar 2014:
  
  No questions are weird!
  Mermaids also known as sirens are not real- but they stem from folk law from many different areas if the world like Ancient Greece, British pirates stories.
  Although mammals such as whales and dolphins live in the sea, half human people do not. From an evolutionary point of view our arms would be useless to us and would have turned in to fins.
  It’s a fun storey- but I think the old pirates that thought they saw them probably saw Sirenia (also known as sea cows!) and may have had a bit too much rum!!!
  There is a condition known as sirenimelia where babies are born with their legs joined together- but unfortunately this is usually fatal as their kidneys and urinary organs do not function.
- Catherine Mansfield answered on 14 Mar 2014:
  
  There have been cases of babies being born with their legs fused together which makes them look a bit like a mermaid.

Question: I know this is a weird question to ask but "are mermaids real? If yes how do they look like? What do they do?