Tomasz Stachura (Self - Wreck Diver), Tomek Zwara (Self - Wreck Diver), Sami Paakkarinen (Self - Professional Diver), Phil Short (Self - Professional Diver), Jenni Westerlund (Self - Technical Diver), Alexandra Richie (Self - Historian, Collegium Civitas, Warsaw), Adrian Levy (Self - Investigative Journalist), Michal Rybicki (Self - Architect & Diver), Siegfried Wölk (Self - Survivor)