While in recovery, my wife spoke with the ENT, he had informed her that he was up around my brain....yikes! and he informed her that he didn't damage my brain and no cerebral spinal fluid was leaking....... in my maxillary sinuses, thats good to know, apparently infection is a common risk, and I could imagine whatever bug(not being a lobster) we might pick up in the sea,lake, or pool could really mess things up and cause more serious infections like menigitis, which really sucks, another problem for me is I believe that within our sinuses we have a mucosal lining that is normal for all of us and after my surgery I believe that mine was scrapped away thus allowing healthy tissue to grow back, If I dove prior to that tissue healing and strengthining(sp?) I believe the pressure could cause injury to young tissue....nevertheless the Aquarium is fine with the absence and we are pregnant with our second child, so no "DIVING FOR ME" (Quote: the soup nazi Seinfield) no offense intended with the nazi thing