RELATED: Proposed 'buddy dive' plan to rescue boys in Thai cave could launch this weekend
Thai officials say the 12 boys stranded inside the cave are strong enough to walk but can't swim safely yet. Divers have been teaching them diving and breathing techniques.
Mauritius Bell is a diving safety officer with San Francisco's California Academy of Sciences. He has extensive cave diving experience.
VIDEO: Officials ID Thai diver who died amid soccer team rescue effort
"It's extremely challenging to train someone in those conditions to dive, let alone cave dive," said Bell.
Cave diving presents unique challenges.
RELATED: Teammates who didn't go on ill-fated hike into cave don't blame trapped squad's coach
"By virtue of the fact that you have an overhead above you, which means that you cannot ascend straight up if you want to exit the cave, you have to go back the way you entered," said Bell.
He went on to say, "It sounds like there are other options at play as far as coring down and then the Elon Musk solution."
Musk tweeted that he was sending employees from his companies SpaceX and Boring to see if they could help.
SpaceX & Boring Co engineers headed to Thailand tomorrow to see if we can be helpful to govt. There are probably many complexities that are hard to appreciate without being there in person.— Elon Musk (@elonmusk) July 6, 2018
He also tweeted suggestions like inflatable tubes and pods to create an air tunnel passageway underwater.
"If Elon says it will work hopefully it will," said Bell.