Video: Top 10 People Who Have Survived Extreme Conditions

A countdown of individuals who have lived through unthinkable situations, from being lost at sea to surviving in the wilderness.

1. Juliane Koepcke

Juliane Koepcke

Survived a plane crash in the Peruvian rainforest and trekked 10 days to safety.

2. Aron Ralston

Aron Ralston

Trapped by a boulder in a Utah canyon, he amputated his own arm to escape.

3. Ricky Megee

Ricky Megee

Lost in the Australian Outback, he survived by eating frogs and snakes.

4. Jose Salvador Alvarenga

Jose Salvador Alvarenga

Survived 438 days lost at sea in a small fishing boat.

5. Yossi Ghinsberg

Yossi Ghinsberg

Survived three weeks in the Amazon jungle after getting separated from his group.

6. Mauro Prosperi

Mauro Prosperi

Lost in the Sahara Desert during a marathon, he survived by drinking his own urine and eating bats.

7. Poon Lim

Poon Lim

Survived 133 days adrift in the Atlantic Ocean on a small wooden raft.

8. Steve Callahan

Steve Callahan

Survived 76 days adrift in the Atlantic Ocean in a life raft.

9. Ada Blackjack

Ada Blackjack

Survived two years alone on an uninhabited island in the Arctic.

10. Alexander Selkirk

Alexander Selkirk

The real-life inspiration for Robinson Crusoe, he survived more than four years on an uninhabited island.