In desperate need of protein, Fernando attempts to catch a fish with his bare hands.

Cass and Shannon meet for the first time - naked in Belize - as they begin their 21-day survival challenge.

Cass and Shannon run across an ancient cave system during their 21-day survival challenge in Belize.

Will Jeff stray from his deep religious beliefs in order to stay warm at night, or will he and Eva continue to sleep separately in the cave of black widows?

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

Fernando Calderon and Samantha Pearson meet for the first time - naked - in Malaysia.

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

The mosquitoes in the Amazon jungle are relentless. AK and Tyler have bug bites everywhere - and nakedness takes its toll.

Leeches invade the private parts of these two Naked and Afraid survivalists in Malaysia.

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

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

Jeff and Eva arrive in Madagascar and strip down for their 21-day naked survival challenge.

Jeff has a personal vendetta against a lizard in Madagascar. When he finally captures it, what he does next will shock you.

On the first night of their 21-day survival challenge, the castaways are pummeled with rain, soaking them to the core.

The castaways spot a snake under a rock. Will it be their dinner, or will they be its next prey?

While squishing through the muddy jungle, a naked castaway spots a snake and needs her partner's aid.

In the 2 years since her time in Panama, Melissa has written and published a comic book and has developed a greater appreciation for the non-material things in life.

Personalities are bound to clash with the extreme conditions of the challenge. But is a peace offering of a coconut enough to ease the tension?

This method of trapping birds has stood the test of time because it’s straightforward and it works. Watch how Paolo get the hang of it right away.

Tensions are high after a wet, rainy night and the lack of fire is not helping. Can Dawn and Chad get a spark going?

During her Naked And Afraid challenge in Surama Lake, Debbie contracted a nasty infection that caused fatigue, dizziness, and hair loss. But after her recovery, she learns to regret nothing.

Lee and Stacey struggle to use the hand drill to light a fire on their first day in Croatia. Is this a bad sign of things to come?

In need of fire to keep dangerous animals away, Dawn and Jonathan go on a mission to gather as much wood as possible. However, even a simple task can end in a medical emergency.

AK and Tyler meet for the first time in the Amazon jungle - completely naked.

Thirty two pounds later, Jeremy is back into his normal groove. Jeremy is glad to be away from the mosquitos and sleepless nights in the swamp but would get back out in a heartbeat.

Lindsay strips down naked and meets her partner, Matt, for the first time in Thailand. With its large predators and treacherous flooding, this challenge won't be easy!

Here's a sneak peek of the all-new season of Naked and Afraid!

If anyone doubted that the Naked And Afraid challenge is the real deal, Bo puts the rumor to rest. Check in with Bo to see how he has recovered from his terrible disease contracted in Surama Lake and how he recovered.

Kristin receives training on how to snare wild game and other small animals. In no time, she’s making snares... and making jokes!

On the first night of their 21-day survival challenge, the castaways are pummeled with rain, soaking them to the core.

While Thailand looks like a picture-perfect postcard, Darrin and Angela know that they're in for a challenge! Here, they take their first naked steps as a survival duo.

The mosquitoes in the Amazon jungle are relentless. AK and Tyler have bug bites everywhere - and nakedness takes its toll.