I'm trying to remember the name of a movie I watched as a kid. I THINK it is about two fairies, one who lives in the water and one who lives in the air that fall in love with each other. I think they both die in the end... Can anyone help me?

I'm trying to remember the name of a movie I watched as a kid. I THINK it is about two fairies, one who lives in the water and one who lives in the air that fall in love with each other. I think they both die in the end... Can anyone help me?
It's called "sea prince and the fire child"
Shiriusu no densetsu (1981) (http://www.imdb.com/title/tt0203895/)

Sea prince and Fire child, babe