Do snorkels help you breathe underwater?
Unlike scuba diving equipment, snorkels do not allow you to breathe deep underwater. Instead, snorkelers must exchange air at the surface of the water through the breathing tube. If the snorkel is submerged beneath the waterline, the snorkeler will not be able to breathe through the tube.
How long can I last under water?
Without the supply of oxygen, the body shuts down. The average person can hold their breath for around 30 seconds. For children, the length is even shorter. A person who’s in excellent health and has training for underwater emergencies can still usually hold their breath for only 2 minutes.