Ear equalization problems are the most common reason new divers cut a dive short, and the second most common pain point overall after mask issues. Almost every diver runs into difficulty at some point — either learning to equalize at all in their first few dives, or having an occasional day when one ear just won't cooperate. The good news is that ear equalization is a mechanical skill that improves with practice, and most divers who struggle initially become reliable equalizers once they understand what's happening and learn a few backup techniques. This guide explains how equalization actually works, walks through the six standard techniques, covers why some divers struggle more than others, and lays out what to do when your ears just won't clear.

Your ear has three parts: the outer ear (everything visible plus the ear canal), the middle ear (an air-filled space behind the eardrum), and the inner ear (containing the cochlea and balance organs). The eardrum sits between the outer and middle ear. When you descend underwater, the water pressure on the outside of the eardrum increases rapidly — about one additional atmosphere every 10 metres. If the air pressure inside the middle ear doesn't increase to match, the eardrum gets pushed inward by the water, causing pain, then potentially injury (a perforated eardrum or middle-ear barotrauma).

The middle ear connects to the back of your throat through a thin tube called the Eustachian tube. Equalization is the process of opening that tube to push or let air flow up into the middle ear, raising its internal pressure to match the surrounding water. Every equalization technique is just a different way of forcing that tube open. The tube is normally closed most of the time and opens briefly when you yawn or swallow — that little pop you hear when you swallow on an airplane is the same mechanism.

Most new divers learn just one technique — the Valsalva maneuver — and stop there. But Divers Alert Network documents six methods, and divers who learn multiple options have far fewer problems over time. If one method fails, you can try another.

Valsalva maneuver: The standard, taught to every new diver. Pinch your nostrils closed (or press the mask skirt against them), then gently blow against the closed nose as if you were trying to exhale through it. The slight overpressure forces air up the Eustachian tubes into the middle ear. The keyword is gently — aggressive Valsalva can damage the inner ear. If gentle blowing doesn't work, don't blow harder; switch techniques or ascend.

Frenzel maneuver: Preferred by experienced divers, freedivers, and anyone with persistent equalization problems. Pinch your nose, close the back of your throat (like you're about to lift something heavy), and push the back of your tongue upward and backward as if making a hard "K" sound. This uses only your tongue and throat muscles rather than your lungs and diaphragm. It's gentler, safer (can't generate dangerously high pressures), and works in any body position. Takes practice to learn but pays dividends.

Toynbee maneuver: Pinch your nose and swallow. The swallowing motion activates muscles that pull the Eustachian tubes open while creating a slight pressure change in the throat. Particularly useful during ascent when you have a reverse block, but also a good complement to Valsalva on descent.

Lowry technique: A combination move — pinch your nose, gently blow (Valsalva-style) while simultaneously swallowing. The combination opens the tubes more reliably than either move alone. Awkward to coordinate at first, but very effective when one ear is being stubborn.

Edmonds technique: Valsalva combined with a jaw thrust or head tilt. Push your lower jaw forward and down (like sticking your jaw out), or tilt your head sharply to one side, while doing a gentle Valsalva. Mechanical jaw and neck movement physically helps pull the tubes open. Often the move that finally works when other techniques have failed on one stubborn ear.

Voluntary tubal opening (BTV): The advanced move — opening the Eustachian tubes through pure muscle control without any nose pinching or blowing. Some divers can learn to flex the soft palate and upper throat muscles in a way that opens the tubes voluntarily. If you can already do this on land (some people naturally can), it's the cleanest and easiest equalization method. If not, it takes serious practice to learn.

Equalize early. Start equalizing at the surface before you descend. Most equalization problems happen because divers wait until they feel pressure before clearing, by which time the tubes are already partially squeezed shut and harder to open. The first equalization should happen at zero feet, then again at one or two feet, and so on.

Equalize often. DAN and PADI both recommend equalizing every metre or so of descent — for a typical descent rate, that's roughly every two seconds. Equalize before you feel pressure, not after. "Equalize early and often" is the slogan every dive instructor repeats for a reason.

Equalize gently. A forceful Valsalva can do real damage to the inner ear. If gentle pressure doesn't work, switch techniques rather than blowing harder. The Frenzel maneuver is preferred at depth because it physically can't generate the dangerously high pressures that aggressive Valsalva can.

Stop and ascend if it hurts. Ear pain is your body's warning that you're approaching damage. If you can't equalize at a depth, ascend a metre or two until the pressure releases, then try again. Never push through pain — the consequences range from temporary fluid buildup to a perforated eardrum to inner-ear injury that can affect balance and hearing permanently.

Descend feet-first. Going down feet-first allows fluid to drain away from the Eustachian tube openings via gravity, keeping them clearer. Head-first descents do the opposite. Use a descent line if available so you can control descent rate and pause as needed.

Look up. Extending your neck (looking upward) helps open the Eustachian tubes. Many divers find equalization easier when they tilt their head back slightly while clearing. A small change in head position can make the difference between a tube that clears and one that doesn't.

Individual anatomy varies. Some people have naturally narrow Eustachian tubes; some have an unusual angle that makes them harder to open; some have one tube that's structurally tighter than the other (which is why a single ear often refuses to clear when the other works fine). None of this is anything you did wrong, and most people learn to work around their personal quirks.

Allergies and congestion are the most common modifiable cause. Even mild seasonal allergies, hay fever, or a slight cold can swell the lining of the Eustachian tubes and make them refuse to open. This is why divers with congestion are advised not to dive — the squeeze you can't equalize against can cause real injury, and decongestant medications create their own risks (more on that in a moment).

Dehydration thickens mucus and makes tubes stickier. Drink plenty of water before diving. Smoking irritates the tube linings; smokers tend to have more equalization difficulty. And anxiety or tension tightens the muscles around the throat and Eustachian tubes — relaxed divers equalize more easily than tense ones, which is partly why first-dive equalization is often harder than later in the same trip.

Many divers reach for a decongestant (Sudafed, oxymetazoline nasal sprays like Afrin) when their ears feel stuffy before a dive. This is generally not recommended. The problem is the rebound effect: as the medication wears off at depth, the swelling can return suddenly and trap pressure in the middle ear that you can't equalize back out. The result is a reverse block on ascent, which can cause significant pain and potential ear damage. If you genuinely need to be on decongestants, you probably shouldn't be diving that day. If you do use them, choose long-acting oral pseudoephedrine that won't wear off mid-dive rather than fast-acting nasal sprays, and clear it with a dive medical professional first.

Most equalization talk focuses on descent because that's where the squeeze pain is most common. But ear problems on ascent — a reverse block — are also possible and can be just as bad. As you ascend, the air trapped in the middle ear expands and needs to vent back out through the Eustachian tube. If that tube is now swollen or partially blocked (especially if a decongestant has worn off), the expanding air gets trapped and pushes outward against the eardrum.

If you feel pressure or pain in your ear on ascent, descend slightly to relieve the pressure, then ascend very slowly while gently performing Toynbee maneuvers (swallowing) to let the air vent. Never hold your breath or skip an ascent — just go up slowly. Reverse blocks usually resolve on their own within minutes if you ascend gently, but they're another reason to avoid decongestants before diving.

If you've tried multiple techniques at a depth and still can't equalize one or both ears, the right move is to abort the dive. There is no shame in calling a dive — your guide and buddy will respect the decision, and pushing through can cause weeks of recovery for what was supposed to be an hour of fun. Signal your buddy, indicate the ear, and head up slowly. Many divers find that the ear that refused to clear on dive one is fine on dive two; the body sometimes just needs a reset.

Don't dive at all if you have an active cold, sinus infection, ear infection, congestion you can't clear, or recent ear surgery. Don't dive within 24 hours of dental surgery. If you have chronic equalization problems and want to dive seriously, see an ENT (otolaryngologist) who works with divers — there are sometimes structural issues that can be addressed.

Ear equalization is one of the few diving skills you can genuinely practice without water. Several times a day — when you brush your teeth, sit in the car, watch TV — try gentle Valsalva or Frenzel maneuvers. Listen for the soft pop in each ear that indicates the tube has opened. Practice in front of a mirror so you can watch your throat muscles working. This builds muscle memory that pays off on dives, and helps you identify which technique works best for each of your ears (they may not be the same).

On dive days, start equalizing gently several hours before you board the boat — every few minutes, just enough to feel the tubes opening. Chewing gum helps because it makes you swallow more frequently. By the time you're in the water, your tubes are warmed up and ready, not opening for the first time of the day under pressure.

If you're congested from a cold, allergies, or a sinus infection, the honest answer is to skip diving until you're clear. The Eustachian tubes and sinus passages are partially blocked by inflammation and mucus, which means equalization will be harder going down and potentially impossible coming up. A reverse block on ascent — where air expands inside your sinuses or middle ear but can't escape — can cause sharp pain, ruptured eardrums, or in worst cases lasting damage. Decongestants might let you descend, but as the medication wears off at depth, the rebound congestion can trap expanding air on the way up. No dive is worth that.

If you're on a paid trip and feel a cold coming on, talk to your shop. Most reputable operators will let you sit out a day or push your remaining dives later in the trip, and would much rather rebook you than have you injure yourself trying to push through. The same applies if you woke up with a cold the morning of a dive — be honest with yourself and your guide.

The single best investment you can make in your equalization is practicing the techniques at home, before the dive trip. Most divers have only ever attempted to equalize while descending, which is the worst possible time to learn — you're already under stress, the pressure differential is increasing, and a failed attempt sends you back to the surface. On land, with no pressure, you can experiment calmly with each technique to find one that works for your ears.

Start with the Toynbee maneuver — pinch your nose and swallow. You should hear or feel a small click or pop in each ear; that's the Eustachian tubes briefly opening. Try the Frenzel next: close your nose, close the back of your throat as if holding your breath, then push the back of your tongue up against the roof of your mouth as if saying "K" or "guh." If you can produce that click without using your lungs, you've got the Frenzel down — and it's the technique most dive instructors recommend for divers with stubborn ears. Practice it sitting in a chair, ten or fifteen times a day for a week before your trip, and the muscle memory will be there when you need it underwater.

If you've worked on technique, you're not congested, you've practiced on dry land, and you still consistently fail to equalize, that's a medical issue rather than a skill issue. Common underlying causes include deviated septum, chronically narrow Eustachian tubes, persistent allergies, undiagnosed sinus disease, or scar tissue from previous infections. A diving-aware ENT specialist can evaluate the actual mechanics and either offer treatment (allergy management, surgery in some cases) or honestly tell you that diving may not be a great fit for your anatomy. Divers Alert Network maintains a referral list of physicians experienced with diving medicine; ask your dive shop or your home country's dive medical association if you don't know where to start.

A few products exist to help divers practice. The Otovent is a small balloon you inflate through one nostril; it's a medical device originally designed for children with chronic ear infections, and it teaches you what a Eustachian tube opening actually feels like — useful if you've never reliably produced one. The EarPopper is similar in concept and used in some clinical settings. Neither is necessary for most divers, but for someone who genuinely cannot produce a Valsalva or Frenzel pop on land, an Otovent for a week before the trip can be the breakthrough they need. Both are inexpensive and available without prescription in most countries.

If you know you struggle with equalization, tell your guide before the dive. A good guide will adjust the descent rate, give you extra time at the surface to clear before going deeper, and choose a site with a slower bottom profile that lets you control depth more easily. New divers in particular benefit from saying upfront that this is something they're working on — a guide who knows will be far more patient and helpful than one who has to figure it out as the dive deteriorates. If you're certifying with us through an Open Water course, equalization technique is part of the curriculum and your instructor will work with you specifically until you have a reliable approach. Reach out on WhatsApp if you want to discuss a specific concern before you arrive — we hear from a lot of nervous first-time divers and can usually reassure or troubleshoot before the dive day arrives.