Parents need to know that this movie is more intense and scary than the usual Disney release, with lots of (highly anachronistic) dive-bombing planes, lots of guns, a huge robot monster, fire, and the death of hundreds of anonymous sailors. Characters are mean to each other and some betray each other. Major characters are in peril and some are killed. One character is a chain-smoker, and there is a joke about whiskey, one about sleeping in the nude, and a whoopee-cushion gag. Milo becomes seasick. The movie does a good job of showing an inter-racial cast working well together, and there are both male and female good guys and bad guys.

Families can talk about the rise and fall of cultures over time, and how the study of history is essential in keeping a culture alive. Kids might want to learn more about the legends of Atlantis and read about the Greek Island of Santorini, which may be the source for some of them. Families might also want to talk about some of the anachronisms and plot holes in the movie. A key element of the plot involves a reference in an ancient document to Iceland, not Ireland, which, of course, had different names and were spelled with different alphabets thousands of years ago. The technology is also inaccurate – we are willing to suspend belief for Jules Verne-style science fiction machinery, but this features airplanes and trucks as commonplace items