Why can't people who spear fish wear scuba gear?

Question

I was watching Sharkweek and they mentioned that people who go spear fishing by law are not allowed to wear scuba gear. I was wondering if someone could elaborate more on that law. Thank you!

Answer 1

"Spearfishing may be done using free-diving, snorkeling, or scuba diving techniques. However, spearfishing while using SCUBA or other artificial breathing apparatus is frowned upon in some locations and is illegal in many others. Because of the belief of lack of sport in some modern spearfishing techniques, the use of mechanically-powered spearguns is outlawed in some jurisdictions."

Answer 2

They were probably talking about the rebreathers that they use. In the Bahamas you cannot spearfish on scuba, where most of sharkweek was filmed.