The Scuba News New Zealand

When most people imagine scuba diving they think of hot weather and coral reefs. While this may bode well for some scuba divers that prefer this safe and easy underwater life, there are others that live in locations that don’t allow them that luxury.

Anishinaabe economist and writer Winona LaDuke identifies two types of economies, grounded in different ways of seeing. Speaking in Vancouver recently, she characterized one as an “extreme extractive economy” fed by exploitation of people and nature. The second is a “regenerative economy” based on an understanding of the land and our relationship to it.

Regulator free-flows are one of the greatest hazards when diving under ice or in very cold water (less than 4°C). The condition is caused by the sudden drop in pressure as air passes from the cylinder through the first stage. When high pressure air passes through the first stage, it hyper-cools the metal moving parts.