When
Michael Apted signed on to direct this in June 2007, filming was set to begin in January 2008 for a May 1, 2009 release date. Shooting would have begun in Malta, and then moved to Prague and Iceland. A few months later, Disney announced that "in consideration of the challenging schedules for (its) young actors", they were delaying the release date to May 7, 2010, and filming was moved to October 2008. The shoot got rescheduled to Playas de Rosarito, Baja California, where two-thirds of the film would be shot at the water tank that was used for
Titanic (1997) and
Master and Commander: The Far Side of the World (2003). Filming was also scheduled for Australia. Disney and Walden eventually grew concerned over Mexico's safety, and Australian officials at Warner Roadshow Studios in Queensland offered to become the project's base for the whole shoot.
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