Why don't scuba divers lungs collapse as they descend?

The pressure from the water surronding the person,causes the person's lungs to collapse. the particles in the lungs move closer together but this... show more The pressure from the water surronding the person,causes the person's lungs to collapse. the particles in the lungs move closer together but this occurs slowly so the person ajdusts to the new atmosphere.

The don't dive far enough. There is a depth beyond which a SCUBA diver cannot dive. This is why. THeir chest muscles are strong enough to keep their lungs open above this.

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