Absolute Pressure – Pressure calculated by using a vacuum as the zero point and including the gauge and atmospheric pressure in the calculation.
Adrenaline – a hormone secreted by the adrenal gland into the circulatory system which stimulates the heart, blood vessels and respiratory system.
AGE AND SCUBA DIVING Scuba diving once had the reputation of being a physically demanding and dangerous activity best left to Navy Seals and Jacques
HOW LONG DOES THE AIR IN THE SCUBA TANK LAST? How long does a scuba tank last? Good question! I once asked the same question
From Julien Borde, Freediving Instructor Do Freedivers Attempt to Maximize Underwater Time, Depth, or Distance?: Freediving students often ask me how long and how deep I
APNEA DIVING – THE MAMMALIAN REFLEX PART 1 OF 2 All mammals have an innate reflex known as the mammalian diving reflex, which serves to
APNEA DIVING – THE MAMMALIAN REFLEX PART 2 OF 2 The mammalian dive reflex is a physiological response to diving. Mammalian Dive Reflex Basics describes
WHAT IS FREE DIVING? Why is an article about freediving on a scuba diving website? The two sports have more in common than one might
HOW TO PERFORM THE CONTROLLED EMERGENCY SWIMMING ASCENT (CESA) The Controlled Emergency Swimming Ascent (CESA) and Out-of-Air Emergencies Imagine that you are swimming peacefully underwater.
How fast of an ascent is too fast? The answer varies among scuba certification organisations. Some organisations list a maximum ascent rate of 30 feet/