an air intake port and an air exhaust port in communication with the interior of mask 10 the first embodiment of the invention takes advantage of the features of the prior art manifold 12 discussed above while adapting the manifold 12 to any industry regulator it should be understood that slight modifications of the adapter may be required to adapt some available regulators however these modifications are well within the bounds of the invention and will be understood by one of ordinary skill in the art subsequent to the reading of this application referring to fig2 one of ordinary skill in the art will recognize a conventional second stage regulator generally referred to as 30 having a rectangular extension 32 with lip 34 recess 36 and base 38 which parts are generally employed to mount and retain an oral adapter not shown for the purpose of holding the second stage regulator in the diver 39 s mouth the conversion system of the invention includes seal 40 which is preferably constructed of silicone and molded in a shape complimentary to base 38 of the regulator commonly the outlet of the regulator is a rectangle shape and therefore the most preferred embodiment of the seal is.