EXCLUSIVE: The Vampire Diaries and The Originals star Claire Holt has landed the co-lead role opposite Mandy Moore in 47 Meters Down, the Dimension Films underwater thriller that the label picked up last spring. Production is now set to start in June with Mark Lane and James Harris producing via their The Tea Shop and Film Company, the outfit behind Cockneys Vs. Zombies and Tower Block.

Moore boarded earlier this week. The two will play sisters on a dream vacation to Mexico who become trapped in a shark observation cage at the bottom of the ocean, with oxygen running low and hungry great whites circling nearby. They have less than an hour of air left to figure out how to get to the surface. Johannes Roberts is directing the pic and he co-wrote it with Ernest Riera. The picture is set to shoot in the UK and also at Pinewood Dominican Republic Studios’ new exterior water tank for the extensive underwater scenes which comprise the majority of the pic.

The Aussie-born Holt played Rebekah Mikaelson on Vampire Diaries and the spinoff Originals, and she’s ramping up her post-CW career in a big way with this as well as a role on NBC’s summer series Aquarius starring David Duchovny, which premieres May 28. She is repped by CAA, Affirmative Entertainment and Doug Stone.