A breathing tube is a device used to help a person breathe. It can be used in medical or recreational settings. The most common type of breathing tube is a snorkel, which is a curved tube with a mouthpiece that allows a person to breathe while swimming underwater. The TRACHEA is another type of breathing tube, which is a tube that connects the throat to the lungs and carries air to and from the lungs. An airhose is a flexible tube that is used to deliver air to a person who is not able to breathe on their own. All three of these devices are types of breathing tubes that can be used to help a person breathe.