The trip you keep almost booking

You almost booked it last month. You didn’t. Same thing the month before. There’s a trip your friend keeps mentioning, or a liveaboard deal in your inbox, or a family vacation with a dive op right on the beach — and every time you get close, something in the back of your head says you’re not ready, and you close the tab.

You’re not alone in this, and the thing stopping you isn’t what you think it is.

DEMA — the industry trade group — puts the active worldwide diver population at around 6 million, using the SFIA standard of at least one dive in the past twelve months. Less than 42% of certified divers clear that bar. The majority of people who hold a c-card are not currently diving. PADI has issued over 30 million certifications since 1966. The lapsed pile is bigger than the active pile — by a lot. This isn’t a personal failing. It’s the shape of the sport, and it has been since the 1960s, when the LA County program watched enough new divers quit that they invented Advanced Open Water partly as a retention move. Sixty years later, we’re still working on it.

The reason this matters: the story most lapsed divers tell themselves is I’ve lost my skills. Right? That story is doing more work than the skills question deserves.

What actually decays, and what doesn’t

Neal Pollock — DAN’s research director, formerly at Duke’s hyperbaric medicine center — wrote a piece for Alert Diver Europe in 2012, updated 2023, called “Practical Thoughts on Physical Fitness and a Return to Diving.” Go read the primary source instead of somebody’s summary of it. Pollock is direct: skills do decay with disuse. “Use it or lose it,” in his words. But he’s specific about which skills.

The stuff that gets rusty: surface swimming in full kit, water exits, getting up the ladder, emergency-response speed, cardiovascular readiness in general. The stuff that doesn’t really go anywhere: your cognitive framework for dive planning, your comfort in the water (especially if you have a swimming background), the pattern of what buoyancy is supposed to feel like. The muscle memory slows down. The knowledge is still there.

That’s the actual skill picture. It’s mostly a fitness-and-surface-work question, not a “can I still dive” question.

Sports psychology has a term for what’s happening in your head: self-efficacy — your belief in your own ability to perform — decays faster than actual ability during a layoff. Then the anxiety about diving becomes a reason not to dive, which keeps you out of the water, which sustains the anxiety. It’s a loop, and it’s not calibrated to your real competence.

The menu is bigger than the industry lets on

The industry’s default answer is a formal refresher course, roughly $150, positioned as a prerequisite. It’s a fine option. Sometimes it’s the right one. It is not a universal requirement, and treating it as one is part of why lapsed divers stay lapsed.

Other things that work:

• A pool drop-in for $20-30 at your local shop. Run through mask clear, regulator recovery, weight check, buoyancy. An hour, done.
• A buddy who’s been in the water recently, running you through the basics before the trip.
• Pollock’s own self-test: a 200-meter snorkel swim in under seven minutes without needing to rest after, plus surface dives to 12-15 feet. Not definitive, he says — but if you can pass it, your fitness is probably reasonable.
• A checkout dive on day one of the trip, benign conditions, with the op’s DM keeping an eye. Most operators do this anyway.
• A formal refresher course, if that’s the fit.

Any one of those. Any two, if you want the extra reassurance. Pick the version that matches your actual concern, your fitness, and how you’d honestly feel about it.

The trip you keep almost booking — book it. The story in your head is louder than the problem it’s describing.