|Michael E. Williamson||Davis|
|Steve Lemme||Scuba Diver|
Daniel and Susan embark on a tropical vacation with their scuba-diving certifications in tow. During a group dive, the two separate themselves from the others to dive a little deeper. An incorrect head-count suggests the entire group has returned, so the boat departs. When the pair surfaces, they make out a vessel in the distance, but it does not immediately set in that they have been left behind. With sharks lurking beneath, their survival chances grow smaller.