She last stepped into the water for her role in James Cameron's Titanic, which she starred in opposite Leonardo DiCaprio 22 years ago.
And Kate Winslet braved the ocean waves once again as she got to work on set of lesbian romantic drama Ammonite alongside Saoirse Ronan on the Beach at Eype near Bridport, Dorset, on Monday.
Portraying paleontologist Mary Anning, the actress, 43, was stoic as she embodied the fossil hunter, who made important discoveries about Jurassic marine fossil beds in the Victorian era.
Going with it: Kate Winslet adopted a stoic expression and braved the strong ocean waves as she filmed new beach scenes for lesbian drama Ammonite in Dorset on Monday
Kate barely batted an eyelid as she was hit by the strong waves, and she was dressed in a chequered period costume which had a starch white collar.
Her brunette locks were styled in a chic bun, and she wore a minimal amount of make-up to give her a natural look.
While it was unlikely to be dangerous, a member of the crew was on hand nearby to assist Kate if anything went awry as she walked along the beach and into the sea.
Production on the film continues even after the family of dinosaur pioneer Anning hit out at the filmmakers for 'inventing' the fact that she was gay.
Scene partners: Kate got to work on set alongside Saoirse Ronan further up the beach
Loving the ocean: Kate barely batted an eyelid as she was hit by strong waves, and she was dressed in a chequered period costume which had a starch white collar
Helping hand: While it was unlikely to be dangerous, a member of the crew was on hand nearby to assist Kate if anything went awry as she walked along the beach and into the sea
Demure: The Hanna star transformed into her character of Anning's supposed lover Frances Bell as she dressed in an off-white gown from the era
After shooting scenes in the ocean, Kate also stepped out to film alongside her co-star Saoirse up on the beach.
Changing for the scene, Kate looked demure as she was clad in a plaid skirt and navy coat, a brown scarf knotted around her neck and a leather satchel slung over one shoulder.
The Titanic star wore gloves to protect herself from the winter chill, while she wore her brunette locks in a loose pinned-back style.
In character: Kate's brunette locks were styled in a chic bun, while she wore a minimal amount of make-up to give her a natural look
Perfect for the era: Kate looked demure as she was clad in a plaid skirt and navy coat, a brown scarf knotted around her neck and a leather satchel slung over one shoulder
Getting into it: As they got into their scene, Saoirse didn't seem fussed as she dragged a prop towards her and got mud on her costume and hands
Exploring: The actress could be seen climbing up the bank and examining the rocky terrain
Meanwhile, the Hanna star transformed into her character of Anning's supposed lover Frances Bell as she dressed in an off-white gown from the era.
Paired with a form-fitting jacket and a red satchel bag, the actress gave her look a chic flair by wearing her blond locks in stylish ringlets.
As they filmed their scene, Saoirse didn't seem fussed as she dragged a prop towards her and got mud on her costume and hands.
Watching the waves: Kate seemed to be contemplating something as she looked out at the sea
Action! The acting duo were hard at work as they filmed next to an abandoned boat
Determined: Despite getting very wet from the waves, Kate walked with purpose as she lifted her skirt and walked along the beach
Stuck in the mud: Saoirse crouched down as she seemed to be excavating for fossils
Barbara Anning, a distant niece who still lives near the Jurassic Coast where the fossil hunter made many discoveries, said there was no proof she was ever in a same-sex relationship.
Ms Anning, of Axminster, said: 'The lesbian storyline is pure Hollywood as far as I know and there was no suggestion that she was a lesbian at all. That's just what they do I suppose.'
The plot centres around the famous paleontologist, who becomes involved with a young woman sent to convalesce by the sea.
Let's go: After they had got what they needed, Saoirse could be seen wrapping her bag over her shoulder
On a mission: During the scene, both stars dug around in the dirt to get specimens
Busy schedule: Kate made her way along the beach while carrying a plank in one hand
What's she preparing? Kate also grabbed a handful of rope and it was unclear why she had it
Saoirse plays her love interest in the film, 'a London woman of means to whom she must unexpectedly play nursemaid.'
It is directed by Francis Lee, who was recognised at the Sundance Film Festival in 2017 for God's Own Country.
Lyme Regis, famously depicted by novelist Jane Austen, has undergone a makeover ahead of the Hollywood duo descending upon the town.
The project marks Kate and Mary Queen Of Scots star Saorise's first collaboration on the big screen.
What's next? With her hands covered in mud, Saoirse looked to Kate during the scene as if she was asking her what they needed to do next
Taking the props apart: As the cameras rolled, Kate could be seen taking pieces of wood off of the abandoned boat
Carrying on: Production on the film continues even after the family of dinosaur pioneer Anning hit out at the filmmakers for 'inventing' the fact that she was gay
Anning's niece had
