Jurassic World
Jurassic World Trailer shows Chris Pratt riding alongside the RaptorsUniversal Pictures

Universal Pictures unveiled Jurassic World trailer on 25 November, earlier than planned, and fans couldn't be happier.

The trailer welcomes you to Jurassic Park, then scares you with genetically modified Dinosaurs, that wreak havoc in Isla Nublar.

Director Colin Trevorrow, in an interview with Empire, spoke about introducing the lab-designed blood thirsty dinosaur, D-Rex.

Trevorrow said, "There is no shortage of awesome [real] dinosaurs. We could have populated this entire story with new species that haven't been in any of these movies. But this new creation is what gave me a reason to tell another Jurassic Park story.

He continued, "We have the most awe-inspiring creatures to ever walk the Earth right in front of us, but for some reason that's not enough. We're always hungry for the next thing, and those who profit from it are always looking to feed that hunger. The focus groups want something bigger than a T-Rex. And that's what they get."

Other than Dinosaurs, this fourth instalment of the Jurassic Park series features the mosasaurus, an aquatic beast, also called the Great White shark.

jurassic world Trailer
The Great White Shark in Jurassic World TrailerSnapshot/Youtube

"The idea came out in one of our first meetings," said Trevorrow. "I didn't know if Steven [Spielberg] and Frank [Marshall] had considered an underwater reptile, so I pitched the mosasaurus and went off on the idea."

In the trailer released, we see the Great White shark enjoying a snack much to the excitement of the spectators.

"I thought it would be cool if we had this massive animal and the park used one of our most fearsome modern predators as food. There could be a whole other facility where they used shark DNA to mass-produce them to feed the bigger beast. It's a bonkers idea, but I'm comfortable going to Crazytown, because I used to live there when I was a kid."

The Jurassic World trailer's most discussed scene is the part when Chris Pratt is riding a motorcycle alongside Velociraptors.

Jurassic World
Chris Pratt in the Jurassic World trailerUniversal

Talking Chris Pratt's character Owen, taming and training the raptors, and working alongside them, the director said, "It's not so clear-cut."

"Owen's relationship with the raptors is complicated. They aren't friends. These animals are nasty and dangerous and they'll bite your head off if you make the wrong move. But there are men and women out there today who have forged tenuous connections with dangerous predators. That's interesting territory to me."

Jurassic World is due for release in theaters on 12 June 2015.

Watch the full trailer here: