I'm very happy with the way my libre sensors have always handled the whitewater kayaking that I put it through month by month. I've also bathed in the sea without problems and never given it a thought until now.... the Libre FAQ's say 'untested in sea water' So, salt water being highly corrosive what is your experience? Have you ever had a sensor fail in the salty environment, maybe a few days later?
I regularly swim in salt water and never had a problem. Although I do cover the sensor but that's more a precaution against door post and curious cats (yes, mine has pried one from my arm while I slept), and it still gets wet.