I am looking for the name of a movie and the actors and actors that starred in it. I think I saw it in the late 70's or early 80's it was about people stranded on an island, it wasn't Blue Lagoon, but I do think it came out around the same time or maybe a year or two later. The young female in it was dark haired and very pretty. I just remembered the actress who starred in it, it was Phoebe Cates.

There was a second Blue Lagoon movie.
"Return to the Blue Lagoon"

Paradise (1982)