Mexican director Guillermo del Toro said his latest film, "Pacific Rim," has scenes never before seen in a movie.

"The film is unbelievable in terms of the action scenes, the size and how spectacular it is ... you are going to see scenes that I believe have never before been seen in cinema, in any film," the filmmaker said in a press conference in Mexico City.

"Pacific Rim," Del Toro's eighth film, is about an epic battle between people and monsters from the bottom of the sea.

Humans create giant robots that are guided by a mind bond formed by two people, reminding viewers that "no one can save the world alone" because humans "need each other," the director said.

Del Toro was hesitant in the past to tackle 3D films, but he said he adopted the format "very carefully" with "Pacific Rim."

"I'm a converted fan of 3D for the action and adventure genre," Del Toro said.

Cast members Rinko Kikuchi, Charlie Day and Ron Perlman, an actor who also worked with the Mexican director on "Cronos" (1993), "Blade II" (2002), "Hellboy" (2004) and "Hellboy 2" (2008), also took part in the press conference. 

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