While it is highly unlikely that a single free-dive would cause a symptomatic decompression injury, there is a high incidence of decompression-related injuries

While it is highly unlikely that a single free-dive would cause a symptomatic decompression injury, there is a high incidence of decompression-related injuries amongst free-diving fisherman due to repetitive and deep free-diving. The probability of decompression sickness occurring is related to time and depth. Here's a link that provides a number of references: http://www.thediveforum.com/dive-medicine/3706-long-term-physiological-impact-repetitive-frequent-free-diving.html http://www.thediveforum.com/dive-medicine/3706-long-term-phy...