There is a maximum depth at which a diver can breathe througha snorkel tube view figure because as the depth increases, sodoes the pressure difference, tending to collapse the diver'slungs. since the snorkel connects the air in the lungs to theatmosphere at the surface, the pressure inside the lungs isatmospheric pressure. what is the external-internal pressuredifference when the diver's lungs are at a depth of 6.1 m (about 20ft)? assume that the diver is in fresh water. (a scuba diverbreathing from compressed air tanks can operate at greater depthsthan can a snorkeler, since the pressure of the air inside thescuba diver's lungs increases to match the external pressure of thewater.)answer is in pa.