I recently fell into the bay fully clothed while trying to fasten a line from a boat to the dock. Only my pride was injured. My iPhone XR and Series 3 Apple Watch only required a rinse with fresh water. I didn’t even have to turn them off! My hearing aids required flushing with fresh water, a quick spray with canned air, and left overnight buried in rice. The next day they worked fine. The only casualty was my glasses that disappeared in the murky water.
I’ve never had any Apple device get submerged in water so I was really impressed with their performance.