Snorkel mask vs swim goggles: which one you need
By SnorkelMatch, last checked . How we check
Goggles and snorkel masks both keep water out of your eyes, so it is tempting to pack the goggles you already own. The difference is your nose: a mask covers it, goggles do not. That one detail decides which you need.
The one difference that matters
Swim goggles are two small cups that seal around the eye sockets, joined by a nose bridge. A snorkel mask is one frame with a skirt that seals around your eyes and your nose, with a nose pocket you can pinch. Everything else follows from that.
Going below the surface
When you dive down, the water pressure rises and squeezes the air inside whatever covers your eyes. With a mask you even it out by breathing out gently through your nose into the mask. The Divers Alert Network describes what happens if you do not: “Failure to equalize by adding air to the space in the mask (by exhaling through your nose), can create unequal pressure” between the air in the mask and the blood vessels of the face, an injury it calls mask squeeze[1]. Goggles leave the nose outside, so there is no way to add air to them. That is the main reason divers and snorkelers use masks.
If you stay at the surface, the pressure hardly changes, and goggles will work for a quick look. If you may want to dip down for a closer view, a mask is the tool for it.
Breathing and water in the nose
With goggles your nose is open to the water. Snorkel breathing is through the mouth either way, but a wave or a dip puts water straight up an uncovered nose, which is uncomfortable and can be startling. A mask keeps the nose dry and lets you clear water from the mask: DAN describes breathing out through the nose while tilting the face up and lifting the lower edge slightly[1].
Field of view and fit
Goggles sit close to the eye with small lenses, which suits swimming laps and looking straight down the pool. A mask’s larger window gives a wider view of a reef. Fit is checked differently: goggles are pressed into the eye sockets, while a mask should seal on its own when you breathe in gently through your nose, without the strap[1]. The seal test shows how.
Side by side
| Swim goggles | Snorkel mask | |
|---|---|---|
| Covers | Eyes only | Eyes and nose |
| Equalizing when you dive down | Not possible | Breathe out through the nose |
| Water in the nose | Open to it | Kept out |
| Field of view | Narrow, close to the eye | Wider window |
| Best for | Swimming laps | Snorkeling, looking at marine life |
| Prescription option | Prescription goggles (CDC) | Prescription lenses or inserts |
Which one you need
Choose goggles if
- You swim laps or play in a pool
- You stay at the surface and only glance down
Choose a mask if
- You are going snorkeling on a reef or in the sea
- You may dive down for a closer look
- You want to keep water out of your nose
If you wear glasses or contacts
The CDC advises removing contact lenses before swimming and suggests prescription goggles for people who need to see clearly in the water[2]. For snorkeling, the equivalent is a mask with prescription lenses or an insert frame; see the glasses guide.
Kids
Kids’ traditional masks are sold by age rather than by face size; one official store labels models “Designed for ages 4+” and “Designed for ages 6+”[4]. Whatever a child wears on their face, the rules for the water are the same: an adult within reach, calm water, a vest made for snorkeling[3]. Read the kids’ guide.
Make sure it fits before you go
The National Park Service puts it simply: “Before snorkeling, make sure that all equipment fits properly”[5]. If you are choosing between a full-face mask and a traditional mask with a snorkel, the mask quiz takes six questions.
Questions people ask
Can I snorkel with swim goggles?
You can look down from the surface with goggles and a snorkel, but goggles leave your nose outside. You cannot breathe out into them to even the pressure if you go below the surface, and water in your nose is harder to manage. A snorkel mask is made for the job.
Why does a snorkel mask cover the nose?
So you can add air to the mask by breathing out through your nose as you go deeper. DAN explains that failing to do so lets the pressure difference pull on the face inside the mask, an injury called mask squeeze.
Are goggles better for swimming laps?
Yes, that is what they are designed for: small, low and streamlined, with no nose pocket to drag. For laps in a pool, goggles; for looking at fish from the surface or diving down, a mask.
Are there prescription goggles?
Yes. The CDC suggests prescription goggles for people who swim and need to see clearly without contact lenses. For snorkeling, the equivalent is a mask with prescription lenses.
Sources
- [1]Divers Alert Network (DAN): Mask Squeeze (Facial Barotrauma)
"You should be able to achieve an appropriate seal by gently placing the mask on your face and inhaling through your nose. The mask should seal to your face and not fall off even without the mask strap in place. It is not unusual for a small amount of leakage to occur while diving, especially if you have facial hair." Equalizing a mask means "adding air to the space in the mask (by exhaling through your nose)". Read on 2026-10-09.
- [2]Centers for Disease Control and Prevention (CDC): Healthy Habits: Keeping Water Away from Contact Lenses
"Contact lens wearers should remove lenses before water activities such as showering or swimming."; "If water touches contact lenses for any reason, take them out as soon as possible."; "For those who are actively involved in swimming or other water sports and concerned about being able to see well enough without wearing lenses, prescription goggles may be a good option." Read on 2026-10-09.
- [3]Hawaii Department of Health, Hawaii Ocean Safety: Snorkeling Safety
"Always snorkel with a buddy"; "Use an anti-fog product in your mask"; "Make sure your face mask fits properly and does not leak"; "Consider using a floatation device appropriate for snorkeling, such as a floating vest or belt"; "If you become dizzy, disoriented, or begin to feel a headache, you may be experiencing carbon dioxide buildup in your snorkel gear"; on full-face masks: "there is currently not enough evidence to show a direct increase in risk", theories include "Carbon dioxide buildup", "Difficulty removing the mask", "Poor fit allowing leaking of water"; "breathe only through your nose using slow, calm breaths"; "Practice breathing through the snorkel and removing the mask on your own before you get in the water."; "If you are renting equipment, rent only from a licensed vendor, and talk to them about using this equipment properly." Read on 2026-10-09.
- [4]U.S. Divers (manufacturer): Snorkeling masks collection
An adult mask "features a one-size-fits-all design"; kids' models are labelled "Designed for ages 6+" and "Designed for ages 4+". Read on 2026-10-09.
- [5]U.S. National Park Service, Dry Tortugas National Park: Safety
"Before snorkeling, make sure that all equipment fits properly."; "For your safety never snorkel alone - always use the 'buddy system'". Read on 2026-10-09.
Related guides
- Full-face vs traditional snorkel mask: how to chooseHow each type is built, how you breathe in it, and which one suits a beard, glasses, a gag reflex, a child or a weaker swimmer, with sources.
- Snorkeling with glasses: prescription lenses, contacts and your optionsWhy glasses cannot go under a mask, what the CDC says about contact lenses in water, and how prescription lenses and insert frames work.
- How a snorkel mask should fit: the 30-second seal test at homeThe no-strap sniff test, what a good fit feels like, where leaks come from and how tight the strap should be, before you ever get in the water.
- How to choose a snorkel mask: a step-by-step guideMeasure, pick a type, read your size on the maker's chart, test the seal and practice on land: the whole decision in order, with links to each detail.
Last checked October 9, 2026. General information from official sources, not medical, safety-training or professional advice. Snorkeling carries real risks, including drowning: never snorkel alone and follow the manufacturer's instructions and local lifeguard guidance.