Open Water

Other mistake: There are 20 divers counted onto the boat. They all head into the water in 2s, but somehow there is 1 person left without a diving buddy.

Other mistake: The couple are shown travelling on an American Eagle prop plane in the islands, but on-board you see them sitting together with another lady sitting on the left of Susan. The prop planes don't seat 3 together. This shot must have been filmed across the aisle on a larger jet. (00:03:25)

Kristal

Audio problem: When the couple is flying to their vacation destination, they are in a Turbo-Prop aircraft. The sound affect used was from a piston engined aircraft.

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Daniel: Other people go on vacation and spend their days just lying around. We have a story we're going to be telling for the rest of our lives.

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Trivia: During filming the actors were not allowed to wear sunscreen because it was too shiny for the camera. They got terrible sunburns from the neck up.

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Question: After the tour guide takes the bad head count when they all get on the boat, you can see him counting them all again. Why didn't he notice right then that 2 people were missing? Also, the diving company was missing 2 scuba tanks and they didn't notice?

Answer: The whole idea with the movie was the bad count. Nobody knows why he counted wrong.

Mortug

Answer: He counted wrong because the man that begged to go back in and the other person accompanied him in the water were already counted for before going back down last minute so when he saw two people coming back up he tallied 20 people.

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