Title: The Blue Lagoon (novel)
Passage: Sometime later, Arthur's ship comes across the lifeboat and finds the three unconscious but still breathing. The arita branch is now bare save for one berry. Arthur asks, ``Are they dead?'' and the captain replies, ``No, sir. They are asleep.'' The ambiguous ending leaves it uncertain whether or not they can be revived.
Question: are they alive at the end of blue lagoon
Answer: yes