free entangled nets. all in plain sight, except when this boat spotted us, it sped away. that's a child dropped off and making a run for it. how bad are the conditions for the children. >> it is very bad for them. how deep -- when it comes to that, a child can lose his life. >> reporter: over several days we didn't meet a single law enforcement official, but did meet a trafficker turned informant. how much did you pay for a child? that's about $80 over 25 years, he bought thousands of children. what's the worst thing you ever did as a slave owner? forcing a kid who doesn't know how to swim to dive, he told us, they can go down and never come up again. so many children have died in these murky waters. if you could say anything to the