How to Equalize Your Ears While Scuba Diving (And Why It Hurts)
Articles 15 juillet 2026

How to Equalize Your Ears While Scuba Diving (And Why It Hurts)

Ear pain on descent? You're not alone. Learn how to equalize properly, which techniques actually work, and how to avoid the most common mistakes.

How to Equalize Your Ears While Scuba Diving (And Why It Hurts)

You're three meters down, the reef looks incredible, and suddenly a sharp pain shoots through your ear. You signal the instructor, ascend, and the pain disappears. Sound familiar? Ear equalization is the number one challenge for new divers, and yet it's rarely explained well. This guide changes that.

Why Do Your Ears Hurt When You Dive?

As you descend, water pressure increases rapidly. At just 10 meters (33 feet), the pressure has already doubled compared to the surface. Your outer ear canal fills with water, but your middle ear, separated by the eardrum, remains an air space. If that air space doesn't adjust to the surrounding pressure, your eardrum gets squeezed inward. That's the pain.

This pressure squeeze is called a barotrauma, or more specifically, a middle ear squeeze. Left untreated during a dive, it can cause a perforated eardrum. The good news? It's 100% preventable with the right technique.

The Valsalva Maneuver : The Classic Technique

This is what most dive instructors teach first:

  1. Pinch your nose through your mask
  2. Gently blow air against your closed nostrils
  3. You should feel and hear a soft "pop" or "click" in your ears

Key word: gently. Blowing too hard can damage the round window of your inner ear. Think of it as inflating a balloon slowly, not forcing it.

The Valsalva works well for most divers in most conditions. But it has one major flaw: it only works when your Eustachian tubes are already open. If you're congested or waiting too long to equalize, it can fail or worse, hurt you.

Other Techniques That Actually Work

The Toynbee Maneuver

Pinch your nose and swallow at the same time. Swallowing activates the muscles that open the Eustachian tubes, while the nose pinch creates gentle pressure. Many divers find this easier and more natural than Valsalva.

The Frenzel Maneuver

Close your nose and glottis (like you're about to lift something heavy), then push your tongue upward toward the roof of your mouth. This is the technique used by freedivers and experienced scuba divers, it's more controlled and gentle than Valsalva. It takes a bit of practice but is worth learning.

Jaw Wiggling / Swallowing

Sometimes simply wiggling your jaw side to side, or swallowing naturally, is enough to open the Eustachian tubes in warm, shallow water. Great as a first line of defense before pinching your nose.

The Golden Rules of Equalization

  • Equalize early and often. Don't wait until it hurts. Start at the surface, equalize every meter on descent.
  • Never force it. If it won't equalize, ascend 50cm and try again. Forcing it risks injury.
  • Descend feet-first. Head-up position helps the Eustachian tubes drain and open more easily.
  • Never dive with a cold or congestion. Blocked sinuses make equalization unpredictable and dangerous.
  • Stay hydrated. Dehydration thickens mucus, making the Eustachian tubes harder to open.

What If You Can't Equalize at All?

Some divers genuinely struggle despite perfect technique. This can be caused by narrow Eustachian tubes, chronic sinusitis, or even a deviated septum. If you consistently have trouble equalizing, see an ENT (ear, nose and throat) specialist before continuing to dive. Diving through persistent ear pain is never worth it.

Antihistamines and decongestants are sometimes used by divers, but these must be discussed with a dive medicine doctor, they can wear off mid-dive and cause what's called a "rebound block", trapping pressure on ascent.

Practice Before You Hit the Water

Here's a secret most instructors don't tell you: you can practice equalization on land. Try the Valsalva or Toynbee maneuver right now while sitting at your desk. You should feel your ears pop slightly. Getting comfortable with the sensation before you're in the water removes one layer of stress from your first dives.

Final Thoughts

Ear equalization isn't a talent, it's a skill. Like buoyancy control or reading a dive computer, it gets easier with every dive. Master it early, and descents become effortless, letting you focus entirely on the incredible world below.

New to scuba gear? Read our guide on How to Choose Your First Wetsuit and our Complete Scuba Gear Checklist for Beginners to get fully kitted out.