In 1999, Swedish medical student, Anna Bågenholm, was skiing in Norway with friends when she fell through a frozen stream and became trapped under a thick layer of ice. Unable to free herself, and forced to wait for rescue, her body temperature quickly fell to 13.7°C (56.7°F) and she fell unconscious. 80 minutes later, Bågenholm was brought to the surface by rescuers, clinically dead. But that is not the end of Anna's story...

Sources:

-Aftonbladet- Her temp was down to 13.8 degrees

-Swedish-Norwegian co-operation in the treatment of three hypothermia victims: A case report, Scandinavian Journal of Trauma Resuscitation and Emergency Medicine

- Tjugofyra7, Clinically dead but Anna survived – My story can help others

-Another Day: Cheating Death

In June 1973, The Johnson Sea Link, a deep-sea submersible, went on a routine mission off the coast of Florida. The Sea Link quickly became entangled in the cables and debris of a sunken ship. Trapped 360 feet below the surface for over 30 hours, four crew members fought for survival, but only two would make it out alive.

Sources:

ENTANGLEMENT OF THE SUBMERSIBLE JOHNSON SEA LINK WITH SUBMERGED WRECK AGE OFF KEY WEST, FLORIDA ON OR ABOUT 17 JUNE 1973 WITH LOSS OF LIFE Coast Guard Washington, D. C. 15 January 1975

The Miami News Fri, Jun 22, 1973 ·Page 4

The Orlando Sentinel Sat, Jun 23, 1973 ·Page 4

The Palm Beach Post Sat, Jun 23, 1973 ·Page 4

The Miami Herald Wed, Jun 20, 1973 ·Page 158

The Miami Herald Sat, Jun 23, 1973 ·Page 17

The Miami Herald Fri, Jun 22, 1973 ·Page 22

The Naples Daily News

When the going gets tough, the tough get going. A well known phrase that could easily be applied to almost every survival situation. Unfortunately, when it really comes down to it; those who would like to get going can’t wait around for anyone else. And that can be tough stuff. Though in this case it was more like “tough shit”.

https://en.wikipedia.org/wiki/Yossi_Ghinsberg

https://www.youtube.com/watch?v=cK9WA2Od_5s&ab_channel=IShouldn%27tBeAlive

Back from Tuichi by Yossi Ghinsberg

https://amimagazine.org/2018/03/14/lost-in-the-jungle/

https://www.strangeoutdoors.com/mysterious-stories-blog/tag/Kevin+gale+survival+Bolivian+rainforest