Diving deeper and longer has a great appeal to many divers. The ability to visit great shipwrecks and remain for more than a few minutes has allowed divers like John Chatterton to explore many dive sites, at the same time inspiring more divers to take up the sport. John is one of the world's most accomplished and well-known wreck divers. He was one of the co-hosts for 57 episodes of the History Channel's Deep Sea Detectives television series and a subject of Robert Kurson's Shadow Divers.

Dive deep with this week's Dive Team Report as host Greg Martin discusses the 1956 sinking of the SS Andrea Doria – ocean liner for the Italian Line home, ported in Genoa, Italy (most famous for her sinking) – with John.