Why ears hurt when you go deep
Water is heavy, and the deeper you go, the more it presses in from every direction — including on the eardrum. Behind the eardrum is a small air-filled space, the middle ear. On land, the pressure on both sides of the eardrum is balanced. But as a child descends in the pool, the water pressure outside rises while the air pressure inside stays the same, and that growing imbalance pushes painfully on the eardrum. Doctors call this ear barotrauma.
What surprises many parents is how shallow this can start. The biggest pressure change happens in the very first several feet of depth, which is why a child can feel it just diving to the bottom of a typical pool. The fix is to let a little air into the middle ear to balance the pressure — a skill called equalizing, and the same one scuba divers and airplane passengers use.
How to equalize, step by step
Teaching a child to equalize is straightforward, and it turns ear pain from a mystery into something they control:
The pinch-and-blow method. Pinch the nostrils shut and gently try to breathe out through the nose. The trapped air is gently pushed up into the ears, and kids often feel or hear a soft "pop." Emphasize gentle — this is a light effort, never a hard strain.
Swallow, yawn, or wiggle the jaw. These natural movements open the tubes that connect the throat to the middle ear and help equalize without pinching.
Equalize early and often. The trick is to clear the ears before pain starts — right at the surface and every foot or two going down — rather than waiting for it to hurt. Once it's painful, it's harder to clear.
Go slowly. Descending gradually gives the ears time to keep up, far better than plunging straight to the bottom.
Never force it
The most important safety message is this: equalizing should always be gentle, and a child should never push through ear pain. Blowing too hard against a pinched nose, or forcing deeper when the ears won't clear, can injure the delicate eardrum — potentially causing a rupture, with severe pain, dizziness, hearing changes, or fluid drainage. Teach kids that if a gentle clear doesn't work, the answer is simply to swim back toward the surface and try again from shallower water. There's no prize for staying down with hurting ears.
Don't dive deep with a cold
When a child is congested — from a cold, allergies, or a sinus infection — the tubes that equalize the ears are swollen and blocked. That means the ears simply can't clear, and diving deep can cause intense pain or even injure the eardrum. The rule is easy: if your child is stuffy or getting over a cold, keep them in shallow water and save deep diving for when they're well. A fun day of surface swimming is far better than an earache that lasts for days.
When to see a doctor
Most diving ear pain resolves the moment a child surfaces. But check in with your pediatrician or seek care if you notice:
Ear pain that lasts well after swimming, rather than easing on the surface.
Fluid or blood draining from the ear, which can signal an eardrum injury.
Hearing changes, ringing, persistent fullness, or dizziness.
Frequent trouble equalizing, which sometimes points to issues a doctor can help with. Children with ear tubes or a history of ear problems should follow their doctor's specific guidance about diving. This article is general education, not medical advice.
Pressure pain vs. swimmer's ear
It's worth knowing these are two different things. The pain we've described is a pressure problem in the middle ear, behind the eardrum, caused by depth. Swimmer's ear is something else entirely — an infection of the outer ear canal caused by water trapped against the skin, with itching, tenderness when you tug the ear, and sometimes discharge. They feel different and are prevented and treated differently, so it helps to recognize which one your child is dealing with.
The bottom line for parents
That sharp twinge when a child dives to the bottom of the pool is almost always simple ear barotrauma — pressure on the eardrum — and it's very manageable. Teach your child to equalize early and gently with the pinch-and-blow method, to descend slowly, and above all to come back up if their ears hurt and won't clear. Keep congested kids in the shallow end, and check with a doctor for lasting pain, drainage, or hearing changes. With one easy skill, your child can enjoy the deep end comfortably and confidently. For more on ear health in the water, see our guides to preventing swimmer's ear and underwater swimming safety.
Frequently Asked Questions
Why do my child's ears hurt when they swim to the bottom of the pool?
As a child goes deeper, water pressure presses on the eardrum, and the air space behind it does not automatically adjust. This pressure difference, called ear barotrauma, causes pain. It often starts in just the first several feet of depth. Equalizing the ears, by gently clearing them, relieves the pressure, and coming up makes the pain stop.
How do you equalize your ears when diving down?
The simplest method for kids is to pinch the nose shut and gently try to breathe out against it, which pushes air into the ears. Swallowing, wiggling the jaw, or yawning also helps. Equalize early and often, before pain starts, and never force it hard. If the ears will not clear, the child should come back up.
Should kids dive deep if they have a cold or congestion?
No. When a child is congested from a cold or allergies, the tubes that equalize the ears are blocked, so the ears cannot clear. Diving deep then can cause significant ear pain and even injure the eardrum. It is best to keep congested children in shallow water and skip deep diving until they are better.
Is ear pain from diving dangerous?
Mild pain that resolves on coming up is usually just a sign the ears need equalizing. But forcing through pain can injure or rupture the eardrum, causing severe pain, hearing changes, dizziness, or fluid drainage. Teach children to ascend if their ears hurt, and see a doctor for pain that lasts, drainage, or hearing problems.
How is this different from swimmer's ear?
Ear pain from diving is a pressure problem in the middle ear, behind the eardrum, caused by depth. Swimmer's ear is an infection of the outer ear canal from trapped water. They feel different and are managed differently. This guide covers pressure-related pain, while swimmer's ear has its own prevention and treatment.