A team can have a healthy conflict if the conflict is solved in a healthy way. When a team openly communicates, addresses the conflict directly, and works together to solve the issue instead of arguing, then the problem and solution can be deemed as healthy. I hope I answered the question! :D
From what I could find, Sirens are asking for help. The song they sing is a cry for help. They are described as acting/singing like a "damsels in distress".
Maybe google this one? You would probably get better answers
