Naked and Afraid XL (2015)

S5E10 Goodbye Cruel Waterworld

In the season finale, the medics keep a watchful eye on Jeff's dangerously high fever as they get ready for his evacuation. Meanwhile, the rest of the group rushes to navigate a challenging 5-mile trek through waters teeming with sharks. As tensions rise, a survivalist's relentless pace leads to a critical medical situation in the middle of the ocean.