Fool's Gold (2008)

This is a story of a married couple who get divorced because he is way more interested in treasure hunting than her, and she wants to settle down, and have a life. Tess (Kate Hudson) gets a job working on a yacht for a rich man and his spoiled daughter. Somehow, Ben (Matthew McConaughey) finds his way onto the yacht, and they all decide to head off on a big treasure hunting gig. Along the way, they run into problems with other treasure hunters whom Ben has rubbed the wrong way.