Jurassic World
Jurassic World Universal

The trailer description of Jurassic World has been leaked by a YouTube user, who claims that he was randomly selected to participate in a survey study of the trailer footage.

The YouTube user Ivan Flores, revealed that the trailer opens with tourists on a ferryboat, on their way to Isla Nublar. That's where the futuristic Jurassic World is located.

The footage has been taken down by YouTube because of copyright violation.

Screen Rant reported that the trailer shows footage of attractions featuring dinosaurs at the amusement park, which is billed as "safe" and extremely popular and reaching about 10 million visitors a year.

It then shows a great white shark being fed to a giant aquatic dinosaur, as visitors look on. Soon, a dinosaur, pegged as one of the film's villains, gets loose. The trailer also shows the chaos that ensues.

Chris Pratt
Chris Pratt as dinosaur trainer Owen in Jurassic World Legendary Pictures

The trailer ends with Chris Pratt, who plays a dinosaur handler, revealing he tamed some Velociraptors, which he utilises to track down the dinosaur that got loose.

Director Colin Trevorrow had previously revealed a little more about Chris Pratt's character.

He told IGN, "[Pratt's] a classic hero in a very modern context. He's the guy who will get you through the jungle alive – but like Malcolm, Grant and Sattler, he's an expert in a scientific field that's connected to our story. The character allows us to explore some new ideas about our relationship with these animals, without losing the humor and sense of adventure."

Trevorrow continued, "He's a great contrast for Bryce Dallas Howard's character, who starts off very corporate, very controlled. Until the running and screaming starts. Then they need each other."

The film will hit theatres on 12 June 2015.