How do you put a water lock on?

To put a water lock on your Apple Watch, follow these simple steps:

1. Open Control Centre: Press the side button on your Apple Watch. If you have watchOS 9 or earlier, touch and hold the bottom of the screen and then swipe up. You can access Control Centre from any screen.
2. Tap the Water Lock button: Look for the Water Lock button (it resembles a water droplet). Tapping this button activates Water Lock. Once activated, the Water Lock icon appears at the top of the watch face.