This gently equalizes pressure. Close your mouth, pinch your nostrils shut, and gently blow out through your nose—like you’re trying to pop your ears on an airplane. You should hear a soft “pop.” Never blow hard, or you can damage your eardrum.
If you’ve just hopped out of the pool, these gravity-based methods from WebMD and Healthline are often the most effective: how to unblock ear after swimming
Tilt your head sideways and cup your palm tightly over your ear. Gently push your hand in and out to create a vacuum that may "pull" the water out. This gently equalizes pressure
That "sloshing" feeling in your ear after a swim is more than just annoying—it can actually lead to an infection called (otitis externa) if the water remains trapped. pinch your nostrils shut