ya well I use either spearguns or pole spear both while underwater . I can dive around 70 ft on one breath though some can go 100 pretty much breath up , slow down your heart . dive down relax on the bottom till something worth shooting shows up . a very selective form of fishing , everything you do shoot you expect to kill and eat . no bycatch like line fishing also much more exciting than just waiting for it to bite . I usually go for bass or pike , unfortunately , they just added walleye to the no shoot list , they were a lot of fun . I usually shoot what I will eat so maybe 3 fish . I know I could get 50 if I wanted to but theirs no point . its a hobby , and a full body work out . its the chase and the hunt that you will find that next fish and it could pop out of anywhere , also theirs a level of skill when it comes to shot placement , don ' t want to ruin the meat .