. >> reporter: marcel has been in and out of jail his entire life.me, it's theft and assault charges. >> hopefully this time i learned my lesson. this isn't the place to be. if you don't have this, then you go stir crazy. listen to the news, music, sports. >> reporter: august rayfield, who swears by his jail-issued transistor radio is in for meth possessi possession, stolen checks and domestic violence. >> we have one of these. >> reporter: the other thing keeping him sane, the calendar where he counts down the days. >> so, 31, 31, 30. and that's what you hear all day. that's what you hear 24/7. no way to live. don't break the law. >> reporter: back in my cell, the noise has also begun. it's my neighbor downstairs again. as i get ready for sleep, i'm wondering whether i can make it. the guards have told me i can leave at any time if i can't take it anymore and that idea is becoming increasingly tempting. the next morning, i wake up in my tiny cell. personally, i can smell freedom at this point and i am ready to get out of here. outside, the deputy ma

. >> for more than a decade, diver dave marcel has been leading scuba tours for curious thrill seekers animals in their natural habitat is something that most people only could dream of. >> the reef is teeming with life. fish of all shapes and sizes, beautiful coral, a rare chance to interact with some of the planet's most interesting characters. >> we had numerous animals. we had nurse sharks, barracudas and goliath groupers and green moray eels. these are my pets. most people have cats and dogs. i have animals under water. >> the sea pro gives his clients a little something extra, physical encounters with sea creatures that strike fear into the saltiest seafarer, like the 300-pound nurse shark. dave feels the key to the carnivores' trust is physical affection. >> whenever you hold a nurse shark, they typically just go to sleep. they're one of the most docile animals that you will find in the wild. they want to be hugged. they want to be scratched. they want you to pet them. if you feed them and hold them, they will just relax in your arms. the customers of course think it's a bit on