Maisie Williams recently jumped off a plane at 15,000 feet in support of Mencap and the Dolphin Project.

The ‘Game of Thrones’ star, who plays Arya Stark on the hit HBO series, had been wearing a Harry Styles-inspired T-shirt, with a quote that says, “Does anybody like dolphins?” This was the same question that Styles asked the San Diego concertgoers over the summer. As a response, the crowd yelled their agreement and, to this, the One Direction member replied, “Don’t go to SeaWorld.”

Evidently, Williams supports Styles’ sentiments as he also posted a video of her own moment on Instagram, encouraging fans to check out Dolphin Project’s official website for more details.

The 18-year-old actress called for donations, providing links to her JustGiving page in support of a U.K.-based charity called Mencap, which offers assistance to individuals with learning disabilities, and to her Crowdrise in support of the Dolphin Project.

“I just loved spiraling fast through parts of the cloud and when you come out — it’s so beautiful,” Williams wrote about the skydiving experience. “I love the whole thing.”

The young star recently appeared as Ashildr, a Viking girl who joins forces with the Doctor and Clara to fight against the Mire, “the galaxy’s most deadly army.”

“I was approached for the role, I didn’t know much about it but knew they were introducing a new character to work closely with the Doctor,” she said. “I’d got through the second episode and absolutely loved it!”

Over the past years, Williams took on the role of Arya Stark on ‘Game of Thrones,’ which has made her more comfortable in having to work with hefty actors who are tasked with playing fierce warriors.

Therefore, guest-starring on a Viking-themed episode actually made the young actress at ease, despite co-star Jenna Coleman wearing her orange space-suit costume during such time.

“It just looks so great with all of us in our Viking outfits, Jenna in her space suit and the Doctor in his cool coat with his crazy sunglasses,” Williams said. “It makes for a really cool and interesting dynamic on screen.”

The Bristol-born actress is set play the leading role in the new young adult zombie film, ‘The Forest of Hands and Teeth’- Kate Maberly’s film adaptation anchored in the horror novel of the same title by author Carrie Ryan.

She will also appear opposite Jason Sudeikis and Jessica Biel in the indie drama ‘The Devil and the Deep Blue Sea.’

As for her main show, HBO’s ‘Game of Thrones’ is set to return for its highly anticipated sixth season in spring 2016.