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.

One minute you're bathing, another minute you're in a gator's crossing. It's times like these when you need your survival partner nearby!

Gio and Wes feast on a giant snail marinated with lemons. Not too bad for a forest feast.

Lindsay isn't afraid to speak her mind. Learn more about the latest Naked And Afraid survivalist in this digital exclusive casting tape.

The longer a tick is on your body, the more likely it is to transmit disease. The abundance of ticks in this Colombian jungle makes these survivalists plenty nervous.

In this digital exclusive casting tape, Julio explains why he's excited to tackle the 21-day Naked And Afraid challenge.

When dire times will fall in Udhampur, the effects of extreme hunger set in... and they're painful.

Tawny isn't your average woman. In this digital exclusive casting tape, she explains why she's prepared to handle whatever may come her way during 21 days in the wilderness.

Julio reveals what really drove him to tap out from his Naked and Afraid challenge, while Tawny explains how she handled the rest of the challenge alone.

Laura is bringing mental fortitude, along with a sharp skill set, to her Naked And Afraid challenge. Her biggest strength: knowing how to adapt to her surroundings.

After one of the most contentious partnership breakups we have ever seen on Naked And Afraid, Nicklas and Laura reflect on their challenge and reveal what disappointed them and what made them proud.

After Darrin's Naked And Afraid challenge in Thailand, he's been staying active outdoors. Besides a minor hip injury, he feels great and has not slowed down the adventure!

Find out what lifted Angel's spirits from one of the hardest physical challenges he's ever been through and how it shapes his mentality for the Naked And Afraid challenge.

Nicole's mental toughness comes from her time in military school and a history of being bullied.

Angel and Nicole discuss their 21 days together in Nicaragua. Find out what brought them together after an unforgettable fight and what surprised them about themselves.

In this digital exclusive casting tape, Bree describes her ideal partner for the Naked And Afraid survival challenge.

Nicklas has had experience making quick decisions to stay safe on adventures. He tells the story about one of his treks when he had to keep calm and press on.