The youngest asked why she had to watch. It's obviously a scary movie.
I told her there were two reasons. First, I want them to learn how to get past fear - the oldest swore she wouldn't get into the ocean again after watching the movie but was in the water the next day. The second reason is it's an awesome movie. Just terrific.
The younger one kept pointing out which gore looked fake and "that blood totally wasn't real." I think she was amused more than scared which, based on her personality, makes sense.
I love having them for the week at the shore. They love the beach and ocean. And I love that they love it.