using up the precious oxygen that was still in there. >> meena is carted away in an ambulance and only later do rescuers learn that he escapes without injury. >> it's extremely remarkable that he didn't at least have some broken ribs or a broken skull or it didn't -- the sheer weight of it crush his chest cavity to where he couldn't even breathe period. >> even meena can't believe his luck. >> i kept asking them in the hospital is there sand in my lungs. no sand. everything checked out. perfectly healthy. my oxygen levels were normal. >> from now on, he'll follow the lifeguard's advice, no digging holes deeper than the height of your knee. a few days after being pulled from the sand, meena gets to meet some of the people who saved his life. >> this is brian and mike. these are the two lifeguards that were on the scene first. >> i was really thankful just