Dry drowning. Very dangerous condition leading to death within hours after leaving the water basin that was used. Dry drowning is causing the ingress of water in the lungs which in turn causes a spasm of the larynx. It prevents the lungs to absorb oxygen completely. A severe hypoxia and brain death follows. When children play in the pool they sometimes swallow water. This oftenly causes dry drowning. Never leave your children unattended near or at a pool, pond, sea.