Brownie's Third Lung - Welcome to Brownie's Third Lung! The leader in Surface Air Supplied Air - often refer as Hookah Diving! Brownie’s, Third Lung, FreeDive, Aquanaut, PowerDive, Hookamax, diving systems, hookah diving, surface supplied compressors, scuba diving, dive flag, dive compressor, scuba gear packages, scuba compressor, scuba surface, snuba, hookah tank, scuba hookah, Brownie’s Marine Group is the world’s leading innovator, designer and manufacturer of surface supplied air diving systems – often referred to as Hookah diving systems. You all know us as Brownie’s Third Lung!