YouTube star Cory Williams and Model/Surfer Anastasia Ashley meet for the first time naked in the jungle. Will they survive 14 days in this special fan episode?

While Cory attempts to start a fire, Anastasia uses the duct tape to fashion a bikini. Only one proves successful.

Frustrated with Adam's inability to make fire, Samantha decides to take charge and has a realization.

Adam and Samantha face their fears about getting naked with a stranger in Velebit, Croatia.

Thirty miles south of the equator is Ecuador's cloud forest, where Kaila and David walk through a cave for their first naked meeting. Will they have the mental strength to make it 21 days?

Unable to dry her feet for days, Kaila's skin begins to show signs of trench foot. If left untreated, the condition could lead to gangrene.

Trevor went on a rigorous diet plan to make up the 20 pounds he lost. He still cherishes his friendship with Kaila and would do it all over again.

A man named Duck and woman named Sarah meet in the jungle. Will they survive 21 days?

What's brown and fat and has 24 very sharp teeth? A large crocodile comes to visit the survivalists.

After a rough challenge, Duck does not recommend sleeping naked in the jungle.

Warm, slimy, prickly pears provide a bitter snack for the survivalists. At least it's an option.

Scott skins a deer carcass covered in files and decides to use some of the hide to make some sturdy shoe material.

Scott gives an update since his time in Texas, his epic escape from a thunderstorm, and how being naked brought him out of his comfort zone.

A master diver and former Navy Seal are dropped off in the ocean, miles from land. Beneath the sea, predators like the 25 foot tiger shark await.

Desperate for food, Sarah resorts to eating a sea raw snail but it doesn't go down easy.

As the dark sets in, Ben and Sarah's inflatable raft springs a leak. Exhausted from paddling for 8 hours the sharks begin circling.

Sarah from the "Lost At Sea" challenge in Exumas checks in from her sailboat in Hawaii. Still positive and upbeat, Sarah continues to adventure the world whether it be by land of sea.

During Kim's casting tape for Naked And Afraid, she describes what her ideal partner would be to balance her personality during the 21 Day challenge.

Water is scarce and the hot sun makes energy levels difficult to maintain.

Keith goes after a deadly sea snake even though Alana thinks it is a completely unnecessary risk.

Keith Busch and Alana Barfield meet for the first time, naked on a remote Fijian island. Will they have what it takes to survive naked and afraid for 21 days?

Desperate for drinkable water, Keith and Alana attempt to purify water using hot rocks.

The nights are long and cold during the 21-Day survival challenge. One of the best ways to combat the elements is to snuggle, but not all partners are comfortable.

Five days into the Naked And Afraid challenge, Julio claims he has no hunger. At the same time, Tawny experiences hunger pains and continues to hunt for the team.

Forget pirates and voodoo curses, the scariest thing about Louisiana might just be the mosquitos. Will Michelle be able to make it through 21 days of biting torture?

Tensions flare as resources are put towards building chairs instead of finding food.

Vincent's frustrations with Sabrina begin to boil over. Will the pair make it through 21 days together naked and afraid in Bolivia?

Vincent and Sabrina meet for the first time, naked in the Bolivian jungle as they begin their 21 day survival challenge.

After a rough challenge, Duck does not recommend sleeping naked in the jungle.

Fire ants, mosquitoes, ticks, oh my! One common experience for many of the survivalists is being eaten alive by tiny critters.

Gary's time spent around the world in extreme conditions has prepared him for the Naked And Afraid challenge. Learn more about his past from his casting tape.

Sabrina turns to her new "friend" Mushroom Man in her partner's absence. A true castaway moment.