rcain1
Contributor
Spare Air
Welcome to ScubaBoard, the world's largest scuba diving community. Registration is not required to read the forums, but we encourage you to join. Joining has its benefits and enables you to participate in the discussions.
Benefits of registering include
Defending yourself against marauding urchins.pipedope:Squash cockroaches?
and if you can open it, then it's an AIR port.port-LIGHT