i got to interview the grandson of jack costeau 60 feet underneath water. let's take a look. >> jack costeau, the legendary master of see exploration gave the world a glimpse into human possibilities under water. he once said the best way to observe a fish is to become a fish. his grandson took that advice to heart. he and a small team of divers called the undersea laboratory home for 31 days. i got a chance to talk to him about his latest research in a cuellar ius. the location in florida keys, is that crucial to the scientific research you are collecting? >> crucial for several reasonses. first of all the sub tropical environment conducive to working long hours but also, it's in the cross hairs of some of the major issues both on the level that we are only nine nautical miles offshore where there is a lot of huma. >> that is incredible. what is the focus of the aquarous? >> looking at both climate change and pollution-related issues. so cli issues. having a good time out there? >> what are they doing? and sending up some of our high-end equipment to monit