Dropped into a high-altitude jungle in Colombia, Tommy and Leah face territorial Pumas and venomous fer-de-lance snakes, but the biggest threat is the extreme temperature changes, where highs hit nearly 100 degrees and lows plummet into the 40s.

Being naked in the jungle with a complete stranger can lead to funny moments, and laughter can be a critical skill when trying to survive through blood, sweat, tears, snake bites, burns, and rashes in hard to reach places.

In the mountainous rainforest of Honduras, a survivalist with an unusual past is paired with a hard-headed police detective to try and survive 21 days, but predatory jaguars, swarms of fire ants and a debilitating injury threaten their challenge.

In sun-scorched Brazil, survivalists Wes and Jesse try to complete their 21-day challenge, but a jaguar crossing into their camp puts them on high alert. Starvation forces Jesse to attack a beehive in search of honey and the entire colony retaliates.

In sun-scorched Brazil, survivalists Wes and Jesse try to complete their 21-day challenge, but a jaguar crossing into their camp puts them on high alert. Starvation forces Jesse to attack a beehive in search of honey and the entire colony retaliates.

Dropped into Guyana's scorching savannah, two Naked and Afraid superfans fight the oppressive heat and constant insect attacks. Scorching temperatures lead to severe dehydration and force a desperate fan to risk illness by drinking unsanitary fluids.

A scrappy marine biologist from Mexico and a Viking fisherman from Norway attempt to endure 21 days in the American wilderness.

When sparks don't fly deep in Panama's Isla San José, an ex-cop Gary Underhill and a "wild child" Kim Kelly clash over cuddling.

Trent Nielsen and Annie Foley are afraid of the dark in the mysterious Mayan jungles of Belize.

Mountaineer Joe Brandl and former cop Andrea Lopez survive in Namibia, which is home to dangerous predators, but inner demons seem to cause more trouble.

Tara Skubella and Dustin Hobbs must endure the jungles of Panama's Isla San José, where disease-carrying insects may prove to be the team's greatest threat.

Hunter Jeremy McCaa and surfer girl Cassidy Flynn must survive on West Nalaut Island in the Philippines.

A wilderness EMT and a hard-headed homesteader try to survive in a coastal Colombian jungle. But when their priorities clash, their partnership becomes volatile.

Two superfan critics test their armchair survival knowledge in Colombia.

A married couple goes from watching the challenge from their couch in Idaho to taking it on in the perilous Philippine jungle. Torrential rain, relentless bugs and deadly boars put their survival skills -- and their marriage to the ultimate test.

Two city slickers from the urban jungles of New York City see if they have what it takes to survive for 14 days in South Africa.

On this fan episode of Naked and Afraid, pro surfer Anastasia Ashley, and YouTuber Cory Williams take their shot at surviving Naked and Afraid. Do they have what it takes to survive completely unplugged from civilization in the jungles of Belize?

Two strangers are dropped in one of the most dangerous African locations in the dead heat of Summer. Faced with aggressive hippos and charging elephants they quickly learn their place, but must mark their territory if they want to make it 21 Days.

Omar and Raven attempt a 14 day fan challenge in Colombia, discovering what's worse: relentless mosquitos or personality conflicts?

Survivalists take on the arid lakebeds of Nicaragua. The cutthroat environment features venomous snakes and deadly caiman, but when one of them fails to pull their weight, it becomes clear their worst enemy could be each other.

A survival instructor and a retiree of the armed forces are inserted into the volcano-ravaged island of Montserrat; they have different survival styles but find a way to work together, then one accident has an eruptive effect on both.

Naked and Afraid legend Steven Lee Hall Jr. joins two first-time survivalists for 21 days in the brutal backwoods of Kentucky. Its deadly copperheads and violent storms push even the King of the Forest to his breaking point.

A mom and an adventure addict drop into the cloud forest of Ecuador; unbearably wet conditions, violent lightning, cabin fever, trench foot and finger-slicing machetes threaten to keep the pair from completing their 21-day challenge.

A Navy veteran and a military mother survive on an island in Mexico where they encounter a panther and attempt to avoid poisonous tree sap.

Swarming wasps, deadly anacondas, poisonous toads and venomous stingrays surround the survivalists in sun-scorched Brazil. Just days into their challenge, a standoff with a poisonous Fer-de-lance snake threatens to send both survivalists home.