Once upon a time , there lived a dolphin. It lived in deep ocean waters . Days went after days , the dolphin grew . So one sunny morning dolphin decided to swim further than usually. It stopped when it saw a huge rock . Soon , he saw a charming creature sitting on the rock . That was a mermaid . He fell in love with her .... But this story has unhappy end . As the song says : "Dolphin and Mermaid are not a couple! !!"