The 27-year-old English actress Jessica Henwick — who has previously appeared in series like Game of Thrones  and Iron Fist and movies like Star Wars: The Force Awakens — explained to uInterview exclusively what it was like working on her new film, Underwater, which centers on a crew of researchers who are faced with deadly creatures after going on a mission seven miles below the ocean surface.

Henwick raved about working with French actor Vincent Casselwhom she called “hilarious” for his repeated use of raunchy jokes throughout the shooting process.

“He’s very casual and laid back, he’s like, ‘it’s not about us, it’s about the giant squid, just do what it says on the page,'” said Henwick of Cassel before adding she kept a book to record all of Cassel’s most outrageous quotes.

The actress went on to reveal that her favorite quote from Cassel was “I have been [messed up] in a zoo many times.”

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“‘Messed’ was not the word,” she said, laughing.

Henwick also said she thoroughly enjoyed working alongside Kristen Stewart. 

“Kristen is probably the most passionate actor I’ve ever worked with,” said Henwick. “She feels so intensely and just gives it her all every day she comes to set.”

Henwick also said Underwater was a physically challenging film to shoot because simply standing up in the suit she wore was exhausting. She revealed the suit weighed nearly 85 pounds (more than half her body weight).

“It was all resting on one shoulder,” she said. “We couldn’t stand for too long, we had to be clipped into these C-stands between takes to lift the weight off our shoulders and we looked like a conveyor belt of Buzz Lightyears sometimes.”

Henwick also said she is convinced everyone should be somewhat afraid of water but added she loves swimming in the ocean.

“I think I was a sea creature in a previous life,” she joked.

Underwater was directed by William Eubank and also stars T.J. Miller and John Gallagher Jr. It will be released on Friday, Jan. 10.