Two divers, one donkey? 

Welcome to ScubaBoard, the world's largest scuba diving community. Registration is not required to read the forums, but we encourage you to join. Joining has its benefits and enables you to participate in the discussions.
Benefits of registering include
The reason you don't need supplemental O2 on an Everest trek is because of the fact that it takes several weeks (I believe) to trek that 20,000 ft. By the time you get to the summit your body has acclimated to the change in O2. Also, when you skydive, you need supplemental O2 at 15,000 ft and above, not 10,000 ft, so you don't become hypoxic. Keep in mind though that I've never climbed Mt. Everest so I am not sure about that one, but I do work at a skydiving dropzone.
Where I dive, schools were mostly cmas (at least ten years ago). When asking which federation i should train from, the shop owner told me padi stands for Plongeur Ayant Des Insufisances. You choose he said🐳SCUBA stands for "Some come up barely alive".
Where I dive, schools were mostly cmas (at least ten years ago). When asking which federation i should train from, the shop owner told me padi stands for Plongeur Ayant Des Insufisances. You choose he said
Lost in translation