This is a fairly uncut video with the original sound of our penetration into the Heian Maru's engine room. We located a cranium sitting on top of the engine. This is a controlled penetration by skilled divers with a lot of experience and a guide. The GoPro was attached to a DSLR camera, so it is not always pointed in the direction of travel. It shows why you need to have the proper training, experience, and remain calm while making this kind of a dive. Enjoy!