Snorkel

A snorkel comprising a breathing tube having an air inlet at one end for admitting air to a diver beneath the surface of the water, inhalation means at the opposite end of the breathing tube to enable the diver to inhale air, air entrapping means at the air inlet to entrap air when the air inlet is submerged, and means defining a tortuous enclosed passage from the ambient air through the air entrapping means to the air inlet to retard the intake of water into the breathing tube while permitting the purging of impure air and water from the snorkel, said tortuous enclosed passage including an air inlet spaced apart from and below the air inlet to the breathing tube, a discharge communicating with the air inlet to the breathing tube and an intermediate enclosed passage forming part of said air entrapping means and winding around the axis of the breathing tube so that air can be freely taken in when the air inlet to the tortuous enclosed passage communicates with air and water can be purged from the tube by exhaled air forced into and entrapped within the discharge end of said tortuous enclosed passage when the air inlet is submerged.