Revealing mistake: In the beginning, right as Richard and Emmeline are seen for the first times as adults, Emmeline picks what appears to be a Zucchini or Squash from a coconut tree. There are coconuts visible next to the item she picks from it.

The Blue Lagoon (1980)
21 mistakes
Directed by: Randal Kleiser
Starring: Brooke Shields, Christopher Atkins, Leo McKern, William Daniels
Trivia: Melissa Sue Anderson ("Mary Ingalls" in Little House on the Prairie) was initially given the offer to be Em, but she turned it down because she would have to do some nude scenes. Brooke Shields got the offer instead.
Question: At the end of the movie, when the ship finds Richard, Emmeline, and baby Paddy in the lifeboat, Richard's father asks if they are dead. A crewman tells him that they are only asleep. Are they really dead and the crewman was trying to spare his feelings by lying to him, or are they really only sleeping?
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Answer: The ending is meant to be ambiguous, and is identical to the ending of the original novel on which the film is based. It is never answered whether they are alive or not.
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