Sebastian Popek - by profession an information systems designer; diving instructor IANTD. For over 12 years devoted to finding and identifying wrecks of the Polish part pf the Baltic Sea. Co-founder of the Baltic Wreck Society, co-owner of wreck themed portals: www.wrecksdiving.com www.balticwrecks.com. Organiser and Head of the expedition to the wrecks of the Baltic Sea (including the Wilhelm Gustloff, Graf Zeppelin, Muhlhausen, Bremerhaven). Co-author of the book "Baltic Wrecks" and the author of several articles on wreck diving (including DirQuest, Diving, Octopus). He constantly seeks new challenges and new wrecks to see.