The term “feathering” in scuba diving comes from the idea of making small, delicate adjustments, much like how a bird uses its feathers to make fine movements in the air. When you “feather” the tank valve, you’re making precise, controlled adjustments to open and close it, rather than turning it fully on or off. This careful modulation helps to conserve air and manage the supply more effectively during an emergency.

Have you encountered any other interesting diving techniques or skills?