Kate Winslet's husband helped her train for 'Avatar: The Way of Water'

It appears Kate Winslet is never letting go of James Cameron.

The Oscar-winning Actress and filmmaker have reunited for "Avatar: The Way of Water," the much-awaited follow-up to 2009's "Avatar," 25 years after they broke box office records with 1997's "Titanic."

Winslet portrays the wise Ronal, an extraterrestrial queen, and healer who rules the oceanic Metkayina tribe, in the visually stunning sci-fi epic.

Winslet, 47, claims that when Cameron first approached her about the role filmed using motion capture technology, she was "instantly on board."

 and converses with "tulkun," Winslet trained intensely in free-diving in the months before shooting (the Pandoran version of a giant whale).

For the several scenes in the movie when Ronal rides a "skimwing" (a type of flying fish)

She practiced with her husband, businessman Edward Abel Smith, by her side.

Ned is "very healthy, fit, and capable of a great many things," according to Winslet.

"He practiced beside me so that we would be secure if I needed to practice without our instructor around because you can't do it alone. Ned's presence was thus crucial."

When filming "Avatar 2," Winslet put forth much effort. Still, it paid off when she held her breath underwater for seven minutes and 14 seconds.

Tom Cruise had previously held the record, spending six minutes underwater while filming "Mission: Impossible - Rogue Nation" in 2015.