b'Equalizing is key for beginner spearos to master to allow you to dive much deeper.Learning to freedive properly will improve your spearfishing experience and target species that live below the recreational snorkeling zone.There are good freediving courses available in Godzone worth taking up.not to hyperventilate, in the old days spearos used to hyperventilate (breath faster or deeper than required) this elevates your heart rate and lowers your CO2 levels which reduces your ability to detect when oxygen is getting low and suddenly your urge to breath is no longer. To avoid blackouts from hyperventilation, long slow calm breaths are the way to go with your exhale and twice the length of your inhale (breath in). /FISHINGINGODZONE45'