Why Can’t Scuba Divers Breathe Pure Oxygen?

Why Can’t Scuba Divers Breathe Pure Oxygen? Divers breathing pure oxygen need to carry much smaller amounts of gas and produce no bubbles, but there are problems, some of which can be fatal. … The oxygen is consumed, carbon dioxide is removed, and nitrogen accumulates, gradually reducing the percentage of oxygen in the counterlung. Do

Why Do Swimmers Hyperventilate Before Diving?

Why Do Swimmers Hyperventilate Before Diving? Hyperventilation before diving enables breath hold divers to stay down longer but is very dangerous. … Because of the hyperventilation the diver does not feel the need to breathe until the arterial oxygen tension has fallen to levels which stimulate the carotid chemoreceptors. Why do swimmers who hyperventilate excessively