My son is in great shape. He can easily free dive to 35 or 40 feet with little of no effort. He likes to do some snorkling and free diving during the surface interval. While in Grand Cayman an instructor diving on the same boat with us said that was not a good idea because of the the release of nitrogene bubbles due to free diving. Does any one know if this is true or not? Is he taking a risk?
Greg
Greg