Underwater Bubble - Snorkeling 2.0

26 ft deep, i build the bubble using some iron rods, some nylon rope, and a transparent sheet. This project is dangerous. Don't imitate ME! I have studied all the steps and materials for the bubble from 2010, Time of permanence - 15/20 minutes No risk for embolism, The only dangerous part is: when you get out the bubble you NEED to evacuete some air from your lungs because going up, air expands. causing chest pain and more medical problems. Knoiwing everything is not so dangerous if you have assistens close to you. refilling the bubble is very simple. the video was recorded 09-20-2013 in Alghero; Sardinia (ITALY)