we went there to meet alexey molchanov. de through the water is to glimpse something other-worldly. he looks part golden poseidon, part porpoise, kicking from the sparkling blue water into the dark. molchanov can dive more than 39 stories deep, while holding a single breath, for nearly five minutes. it doesn't seem like a gid dee d your breath that long. >> alexey molchanov: right. ( laughs ) for me it does. >> alfonsi: it does? >> molchanov: right. enjoy finding new boundaries and pushing them further, because i know i can. i know through all these years and, like, thousands of hours of training and diving, how well i can use my oxygen, how slowly i can use it, and how efficient is my technique. >> alfonsi: what does it feel like? >> molchanov: it feels very much like flying, actually. very much like freedom. just pure joy of flying, like staying and feeling no urge to breathe. >> alfonsi: but you're enjoying it? >> molchanov: yep. yeah, without joy, it doesn't work. >> alfonsi: we were given the sports equivalent of a side