Hi MS, This topic was covered recently, and the consensus is that, yes indeed, swimming in the ocean, or pool, is perfectly safe. For myself, I have done both, and regularly swim in my local pool. I have not found that either the salt water, or chlorinated water, loosens my pouch, or reduces my wear time. Some have said they feel that it reduces their wear time if they spend a lot of time in the ocean, so I guess it can vary from person to person. The type of pouch you are wearing may have something to do with it. Perhaps some adhesives stand up better. I wear a Hollister, one piece, convex flange, and I get six day wear time, which has not been affected by my swimming. Go for it!