Do I have to do anything to care for the watch after I have been in the sea?

After swimming or diving in salt water, immediately rinse the watch in a stream of fresh water. If your watch has a rotating bezel, turn the bezel several times while rinsing it. This will prevent salt build up and corrosion of the bezel ring.Q: I work with chemicals is that a problem?
A: Some chemicals can corrode the gaskets and make them vulnerable. Heavily chlorinated water can also cause problems, as can chlorine bleach, bath foams and hairsprays that work their way into the watch’s seams and damage the gaskets. (They can also damage the watch’s finish although this is rare with military spec watches.