Revealing: When Lavagirl burns the diary, it goes up in flames. However, if you watch Max and Sharkboy, they look at an unseen object falling to the ground. The unseen object is the diary, taken out in editing. Later, Max looks back at the diary on the ground.

Other: Near the end, Max's father (David Arquette) is holding onto a tree to avoid being blown away by the tornado. However, the next time you see him he starts to talk to Max with both of his hands off the tree and he isn't being affected by the incredibly strong wind at all.