john hohmann wince to have a look were floating above the biggest blue hole in the americas stretches at least 274 meters beneath the sea bed. here, just off the coast of mexico, you can tell me peninsula was discovered by his whose ports that in the mail purposes it was old. my father was a diver and he went off to evict group. he was chasing it and it went into the whole and that's when he saw it for the 1st time. that was 20 years ago of to that the whole was the gotten just one of many and this by until his you speak, i'm working with x but fun. carlos, acetic. i mentioned it. they went back and measured it. we're still nice by step one. the one on this good them this? oh no. i see. i felt like a pirate in the caribbean when they discovered a treasure because it was something new. and that's like a trace route as well. we knew we had to keep it secret until we could check it at the most, get the most, give us a lot of that. now they can talk, they verified it as a 2nd deepest blue hole in the world and named it tom ha, the pool to remind the language here. tom was formed by changi