Here's one not alot of people do. This is me in about 110' of water in the Gulf. I do alot of spearfishing. Hope this one qualifies.
NO EFFING WAY! THAT DOES NOT QUALIFY!!! This is how real men do it! Holding their breath and diving into the darkness. Well, not really into the abbys, I don't usually look for fish deeper than 22m... like 66 feet, but you know what I mean.
All the spearfishing i have done and seen done was always without compressed air bottles. It is forbidden in Spain (actually in the whole Europe IIRC) and most of the places I have heard off.
Mikel
PD: Thanks for the giveaway man!