Off beaten track

Is generally all you have at 36 meters before your bottom time runs out. At 36 meters you are under 3.5 atmospheres of pressure. This means that your ears will pop like crazy as you descend and more importantly you will use your air correspondingly quicker. Your bloodstram also will absorb nitrogen faster at greater depths, and you become saturated with nitrogen (for a super analogy check here . Coming up too quickly in such a situation will cause the nitrogen to bubble out of your blood stream like a coke bottle with its top removed. This is mildly unpleasant to say the least, leading to the dreaded �bends.� Bubbles in the brain, not a good thing The combination of faster air consumption and nitrogen saturation means going into decompression on deep dives is especially dangerous as you run the risk of breathing your tank dry during an extended decompression stop. For the uninitiated this is the period of time you spend hanging at around 3-4 meters of water while the absorbed nitrogen

EFL's 30th Anniversary lecture series which began on Thursday 24 November continues for the next 3 consecutive Thursdays. More details on the flier below and you can reserve your seat by calling the number on there. The Marine one should be interesting!