I would say spearfishing with tanks at any great depth is definitely advanced diving. Whether it is morally acceptable is something else.
Almost too easy and most fish aren't expecting a spear toting, air bubbling monster to sneak up on them. I prefer free diving and fishing.
My one and only experience using tanks was being invited on a shoot party, off the coast of Tulum. At 150 feet, it was not easy to keep aware of no-decompression limits and also manage the fish catch. I did three dives within 2 hours. I shot a porgy and the Mexican divemaster shot a dozen or so hogfish. I was looking for grouper. None to be found as they had probably been fished out long before. Check out this link:
http://www.seahunters.com
Almost too easy and most fish aren't expecting a spear toting, air bubbling monster to sneak up on them. I prefer free diving and fishing.
My one and only experience using tanks was being invited on a shoot party, off the coast of Tulum. At 150 feet, it was not easy to keep aware of no-decompression limits and also manage the fish catch. I did three dives within 2 hours. I shot a porgy and the Mexican divemaster shot a dozen or so hogfish. I was looking for grouper. None to be found as they had probably been fished out long before. Check out this link:
http://www.seahunters.com