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.

Brandon’s burns were an injury we had never seen on Naked And Afraid before and his hypothermia ultimately forced him to tap out with dignity. Find out how he’s recovered and if he regrets anything.

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

Days of rainfall have lead to an increasingly dangerous flooding situation in Thailand. Matt and Lindsay will have to be extremely careful around the base of the waterfall.

In the eastern cape of South Africa, is a lost world of grasslands and deep river gorges, known as the wild coast. Two superfans take on this beautiful yet ruthless region of the country for 14 days.

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

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

4 months after her time in the swamps of Louisiana, Melanie has gained back some of the weight she lost and eating a clean, healthy diet. She has grown even closer with her partner Jeremy and feels lucky to have had him as a partner.

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?

Jeff and Eva are starving in Madagascar and are on a mission to find food.

In the Everglades, Amber had two different parasites that caused her to be medically taken out of the challenge. Watch her explain her painful recovery and how she feels about her challenge.

Cass and Shannon enter the labyrinth of pitch black caves, where they encounter rabid bats and deep drop-offs.

Grubs are a delicious treat when you have no other options for food. Shannon is overjoyed to have found some. Would you eat them?

Cass is sick and tired of ticks plaguing him, especially in his eye lids and around his "pee hole."

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

Michelle and Jeremy meet in the oppressively humid swamps of Louisiana and make a naked pact to make it through 21 days.

Tawny and Julio acknowledge the awkwardness of meeting a stranger naked for the first time as they get naked in Florida.