All helium that goes into a balloon is wasted, never to be recovered. In scientific applications it is typically recycled. I don’t know about SCUBA, but I’d ven

All helium that goes into a balloon is wasted, never to be recovered. In scientific applications it is typically recycled. I don’t know about SCUBA, but I’d venture to say that it’s a necessity for deep dives whereas in a balloon it’s a novelty.