wow, how did he not get frost bite or whatever from being in water over 24 hours?
I believe this is in the Gulf of Mexico, where the water is probably in the 70s.
Someone pointed out yesterday that it was 67.
I guess you can become hypothermic even in 80 degree water over time.Wiki -
Water temperatures that would be quite reasonable as outdoor air temperatures can lead to hypothermia very quickly. For example, a water temperature of 10°C (50 F) can be expected to lead to death in approximately 1 hour, and water temperatures hovering at freezing can lead to death in as little as 15 minutes. [6]
On the other end of the scale, in water even a temperature as high as 26°C (80 F) may eventually (after many hours) lead to mild hypothermia. [7]
Alcohol consumption prior to cold exposure may increase one's risk of becoming hypothermic. Alcohol acts as a vasodilator, increasing blood flow to the body's extremities, thereby increasing heat loss.[8] Ironically, this may cause the victim to feel warm while he or she is rapidly losing heat to the surrounding environment.
The United States Coast Guard promotes using life vests as a method of protection against hypothermia through the 50/50/50 rule: If someone is in 50-degree water for 50 minutes, he/she has a 50 percent better chance of survival if wearing a life jacket.[9]