Baywatch (1989)

S10E16 Thunder Tide

Sean, Jessie, and Kekola kick off another exhausting day as they work to rescue a woman stuck in an air pocket under a coral reef while also dealing with hazardous sulphur fumes in the cave. After successfully saving three skydivers whose parachutes deployed late, Dawn notices striking resemblances between one of the skydivers, Jerome, and her former boyfriend Ryan, ultimately realizing that they are, in fact, the same individual.