After a full day underwater, a solid evening routine can save your gear and...

https://wiki-net.win/index.php/How_to_Tell_if_a_Sync_Cable_is_Going_Bad_Before_It_Fails_Underwater

After a full day underwater, a solid evening routine can save your gear and your images. Start by rinsing your cameras in freshwater to flush out salt and sand. Then swap your o-rings after a quick inspection to keep your housings watertight