FAQ

The megalodons were created using a combination of practical and digital effects. The filmmakers used animatronics, models, and puppets for some of the close-up shots, and computer-generated imagery (CGI) for the wide shots and the underwater scenes. The CGI megalodons were based on real-life shark anatomy and behavior, as well as fossil evidence of the extinct species.

The title refers to the Mariana Trench, the deepest part of the ocean, where the megalodons were discovered in the first film. The trench is also the setting for most of the action in the sequel, as the characters explore its uncharted depths and encounter new dangers and mysteries.

Yes, the film is loosely based on the 1999 novel The Trench by Steve Alten, which is the second book in the Meg series. The film follows some of the main plot points of the book, such as the existence of a female megalodon named Haiqi, the involvement of a malevolent mining operation, and the appearance of other prehistoric creatures. However, the film also makes some changes and additions to the book, such as the characters, the locations, and the tone.

Besides the megalodons, the film features several other extinct marine animals that lived during the Cenozoic era, such as the giant squid, the mosasaurus, the liopleurodon, and the helicoprion. The film also introduces some fictional creatures that are based on scientific speculation, such as the bioluminescent fish, the electric eel-like worms, and the tentacled monster.

Because the scientific accuracy of this film with regards to such details as pressure or sustainability is almost non-existent.