The incident happened during a diving trip in the Galapagos Islands.
She stars opposite Josh O'Connor and Johnny Flynn.
Dylan and Paris will follow in the footsteps of Idris Elba's daughter, Isan, who took on the role last year.
The star was named best actress for her role in The Favourite.
They were part of a huge sale of move posters to go up for auction.
The company is famously secretive about its viewing figures.