Snorkel

A snorkel comprising:

• a breath conduit extending in a vertical direction;
• a mouthpiece mounted on a lower end of said conduit;
• a breath opening port formed in an upper end section of said conduit;
• a valve mounted on an upper end section of said conduit to open and to close said opening from outside;
• a float adapted to move in said vertical direction when given buoyancy to actuate said valve to close said opening and thereby to prevent water from flowing into said conduit;
• said valve being mounted, in a pivotal manner in said vertical direction, on an outer surface of a peripheral wall of said conduit by intermediary of arms integral with said valve so that said valve rotate downward in said vertical direction to maintain said opening in its open state as long as said upper end section of said conduit is exposed above water surface;
• said float comprising two or more floats allocated circumferentially of said conduit and housed, in a movable manner in said vertical direction, inside a housing provided outside said upper end section of said conduit and having an annular cross-sectional shape in a diametric sectional view of said conduit;
• said housing including water passages allowing water to flow thereinto when said housing is submerged below said water surface and gives said floats buoyancy, respectively, so that said floats may individually move upward in said vertical direction and, when said housing is exposed above said water surface, allowing said floats to move downward individually under their own weight;
• and
• said arms being thereby rotated upward so as to actuate said valve to close said opening, when any one of said two or more floats is given said buoyancy and moves upward in said vertical direction.