I have seen some spearos in you tube dive for 20-40 meters in hung at bottom for atl least one minute and come up again at surface with total dive time around 3 minuets...how is that possible I mean it seem really hard , i can hardly dive to 10 meters no matter what kind of training I do , still couldn’t make it beyond 10 meters for spearfishing
Is there something that I am doing wrong or those spearos that I am seeing in you tube are just unique?