As someone who spends as much time as possible in the water—whether I'm paddling out on a surfboard, descending on a scuba tank, or floating face-down watching a sea turtle glide past—I've learned that the gear between you and the ocean matters more than most people realize. When it comes to snorkeling, that decision often starts with a simple question: should I rent or buy?
The answer isn't always straightforward, but after years of doing both, and after reading the sobering findings from the Snorkel Safety Study in Hawai‘i, I can tell you this: your choice has real implications for your safety, comfort, and enjoyment. Let me walk you through what I've learned.
The Case for Buying: Control Over Your Safety
Let's start with the most important reason to own your own gear: you know exactly what you're getting.
The Snorkel Safety Study tested 50 different snorkel devices and found that airway resistance varies dramatically between designs—and critically, you cannot reliably tell by looking whether a snorkel will have high or low breathing resistance. In their tests, technicians who were familiar with snorkel designs correctly guessed low-resistance snorkels only 26% of the time. That means even an experienced snorkeler could pick up a rental that feels fine but actually requires significantly more effort to inhale.
Why does that matter? Because snorkel-induced rapid onset pulmonary edema (SI-ROPE) is a documented cause of drowning. When a snorkel creates high resistance to inhalation, it forces your lungs to work harder, generating excessive negative pressure. Over time—sometimes just minutes—that negative pressure can pull fluid from your capillaries into your air sacs. You feel short of breath, weak, and suddenly exhausted. It happens quietly, without the dramatic struggle we associate with drowning.
When you buy your own gear, you can:
- Test it thoroughly in a pool or shallow water before relying on it in open ocean
- Research the design and understand its breathing characteristics
- Know the maintenance history—rental gear gets used hard and may have degraded seals or valves
- Ensure proper fit, which is critical for both comfort and safety
The Case for Renting: Convenience and Travel Realities
I won't pretend renting doesn't have its place. When I travel to a new destination, I've occasionally rented gear because:
- Luggage space is limited—especially if I'm also bringing surfboards or dive gear
- I want to try before I buy—renting a full-face mask for a day lets me decide if I like the concept
- I forgot something—it happens to the best of us
But here's the catch: rental gear is often chosen for durability and cost, not for optimal breathing performance. Many rental fleets use older designs or full-face masks that, according to the Snorkel Safety Study, were considered a contributing factor in 90% of incidents involving those masks. The study also found that full-face masks cannot be removed easily in emergencies, cannot be cleared with a sharp exhalation, and cannot be "spit out" like a traditional mouthpiece.
What to Look For When Buying
If you decide to buy—and I strongly encourage it for anyone who snorkels more than once a year—here's what matters:
1. Low Breathing Resistance
Look for a mask designed with airflow in mind. The Seaview 180, for example, is engineered to reduce CO₂ buildup and support comfortable surface breathing. It uses testing methodologies inspired by respiratory and diving equipment standards. The key is finding a mask where inhalation feels natural and unrestricted, even when you're breathing a little harder than usual.
2. Proper Fit
A mask that doesn't seal properly will leak, fog, and force you to work harder. Try it on before buying. The skirt should conform to your face without excessive pressure. Pull the strap away—if the mask stays in place with gentle suction, that's a good sign.
3. Easy Removal in an Emergency
This is non-negotiable. If you feel short of breath, you need to be able to get the mask off quickly, get on your back, and breathe normally. Traditional two-piece systems (mask plus separate snorkel) are simpler in this regard. Full-face masks, even with quick-release features, are harder to remove under stress.
4. Intended Use
Remember: recreational snorkeling masks are designed for surface use only. They are not for diving, freediving, or scuba. The Seaview 180 is explicitly designed for surface snorkeling, and that's the right expectation to have for any recreational mask.
The Rental Reality Check
If you do rent, here's how to minimize risk:
- Inhale deeply through the snorkel before you get in the water. If it feels restrictive, ask for a different one.
- Check for obvious wear—cracked silicone, stiff valves, loose connections.
- Test it in shallow water first, where you can stand up and remove it easily.
- Be extra cautious if you've recently flown long distances. The Snorkel Safety Study notes that prolonged air travel may compromise lung tissue integrity for a few days after landing. Combined with a high-resistance rental snorkel, that's a recipe for trouble.
- Know your limits. If you have any respiratory or cardiovascular condition, consult a doctor before snorkeling—and consider buying gear you can trust.
My Personal Approach
These days, I own my own Seaview 180 mask. It travels with me in a padded case, and I know exactly how it breathes, how it fits, and how it performs. When I arrive at a new beach, I don't have to wonder whether the rental gear will work for me. I just put on my mask, check the conditions, and get in the water.
But I also carry a backup—a simple, low-resistance traditional snorkel and mask combo—because sometimes conditions change, and having options is part of being a responsible waterman.
The Bottom Line
Snorkeling is not a benign, low-risk activity. The data from Hawai‘i shows that visitors drown at disproportionately high rates, and that equipment plays a role. Whether you rent or buy, the responsibility for your safety lies with you.
If you snorkel regularly, invest in your own gear. Choose a mask designed for low breathing resistance, test it in safe conditions first, and learn how it behaves before you venture into open water. If you rent, be skeptical, be thorough, and be ready to abort if something doesn't feel right.
The ocean will always be there. Make sure you are, too.
