Learning to equalize your ears as you descend
Equalizing clears pressure in your ears as you go deeper. Learn common methods, how to descend slowly, when to stop, and when a doctor should check your ears.
Equalizing means adding air to the middle ear so that its pressure matches the water pressure pressing on your eardrum. As you descend, the pressure around you rises by roughly one atmosphere for every 10 meters, or about 33 feet, of seawater. If the air space behind your eardrum does not keep up, you will feel fullness, pressure, or pain. Learning to equalize early and regularly is one of the first practical skills taught in a diving course.
Most people learn the basic methods in shallow water, and the skill improves with practice. The key habits are simple: start early, move slowly, and never force the process. If you cannot clear your ears, the safe response is to stop, go up a little, and try again rather than pushing harder.
Common ways to equalize
The Eustachian tubes normally stay closed and open briefly when you swallow, yawn, or chew. Equalizing works by opening them on purpose, which is why each method focuses on moving air up toward the throat.
The Valsalva maneuver is the method most people learn first. Pinch your nose closed, close your mouth, and blow gently through your nose against your pinched nostrils. The air travels up the Eustachian tubes into the middle ear. Use a gentle, steady pressure, because a hard blow does not clear the ear any faster and can injure the eardrum.
Other methods include the Frenzel maneuver, which uses the tongue and throat muscles to push air up the tubes without strong pressure, and the Toynbee maneuver, which involves swallowing while your nose is pinched. Many divers also use jaw movement, gently moving the lower jaw forward or from side to side to open the tubes. Your instructor will usually demonstrate several methods, because the one that works best for you may differ from the one that works for a classmate.
Practice these methods on the surface before you go under. If you cannot clear your ears with a gentle technique while standing still, going deeper will make the pressure harder to manage, not easier. Use surface practice as a check on your technique and on how your ears feel that day.
Descend slowly and equalize early
Descend feet first, at a slow and steady pace, using a line or the reef slope as a guide. Equalize before you feel any pressure, and repeat the process at short, regular intervals rather than waiting until the discomfort builds. Pressure that is not cleared early is harder to clear later, and ears that have been squeezed can take longer to feel normal.
Keep your head upright or tilted slightly, and avoid stretching your neck in ways that may close the Eustachian tubes. Pause for a few seconds during the descent to equalize, then continue only when your ears feel clear. Many instructors suggest a short, comfortable pause on the way down, so you are not rushing to keep up with your buddy and your ears at the same time.
Stop when you feel pain or cannot clear
If you cannot equalize, stop descending. Go up a meter or two until the pressure eases, then try again. Do not push through pain. Forcing equalization can rupture the eardrum or cause injury to the inner ear. If the ears still do not clear after a few attempts, end the dive and ascend slowly, signaling your buddy as you go.
Pain on the way up, called a reverse block, needs a different response, because your air supply keeps running down while you deal with it. Air in the middle ear expands as you rise and usually escapes on its own through the Eustachian tubes. If the tubes stay blocked, do not use the Valsalva maneuver. It adds pressure to a middle ear that is already higher than the water pressure around it, which is the wrong direction. Signal your buddy, descend a meter or so until the pressure eases, then swallow, swallow with your nose pinched, or move your jaw gently, and ascend again as slowly as your air allows. Do not rush to the surface to escape the pain, and have a doctor check the ear after the dive if it still hurts.
Divers with a cold, allergies, or sinus congestion are more likely to struggle with equalizing, because the tubes can swell and block. Many instructors advise waiting until the stuffiness clears before diving. If you use a medicine to reduce congestion, check with a doctor or pharmacist before relying on it to dive. A widely taught concern is that a decongestant can wear off during the dive, letting the tubes swell shut again on the way up and causing a reverse block.
A sore ear after a dive is a reason to rest from diving until it has settled, and to avoid repeating the same descent while it still hurts.
When to see a doctor
Pain that continues after the dive, a feeling of fullness that does not clear, ringing, dizziness, hearing changes, or any bleeding or fluid from the ear are reasons to see a doctor before diving again. These symptoms can point to an injury that needs medical assessment, and they should not be treated as something to ride out.
Anyone with a recurring ear or sinus problem should talk to a doctor before taking a diving course. A doctor can check whether the ears are healthy enough for pressure changes and can explain what to watch for. This information is general guidance, not a diagnosis. If you are unsure whether symptoms are serious, speak to a doctor or an ear, nose, and throat specialist before the next dive.
A useful habit is to note how each descent felt. If one dive was harder to equalize than usual, treat that as a signal to slow down on the next one, and mention it to your instructor before you go down again.