Diving on the famous B-17 wreck lying on the bottom of the Adriatic sea at the depth of 72 meters, right next to the coast of Vis island. Due to the wreck being a war grave of US Army Air Force Second Lt. Ernest Vienneau, any penetration is strictly prohibited. The ban does not apply to video cameras held in an extended hand, so there's quite a lot of footage from inside the wreck.
