5 Buoyancy Mistakes Every New Diver Makes

Ask any experienced diver what separates a nervous diver from a confident one, and they’ll say buoyancy. It’s not strength, it’s not courage — it’s the ability to hover effortlessly, move precisely, and interact with the underwater world without thrashing. Here are the five mistakes we see most often, and how to fix each one.

1. Over-weighting

The most common mistake by far. New divers are often told to add weight until they sink, which makes descending easy but creates a nightmare for buoyancy control underwater. You should be able to hover at 15 feet with an nearly-empty tank using minimal BCD air. Do a proper weight check before every trip.

2. Breathing Too Fast

Your lungs are your primary buoyancy device — even more than your BCD. Fast, shallow breaths mean you’re not using this tool effectively. Slow, full breaths give you a natural rise on inhale and descent on exhale. Practice breathing control in a pool before open water.

3. Chasing Buoyancy with the BCD

Repeatedly hitting the inflate and deflate buttons creates a yo-yo effect — you’re always behind the curve. Small adjustments, infrequently applied, are the goal. Use your breathing for micro-adjustments and the BCD only for larger depth changes.

4. Wrong Body Position

Fins below your body create drag and disturb the bottom. A horizontal trim position — body flat, fins slightly elevated — is the goal. This is partly a weighting issue (weight placement matters) and partly muscle memory. Our Foundations and Principles of Diving specialty course is the fastest way to fix this.

5. Not Practicing Enough

Buoyancy is a perishable skill. Divers who only get in the water once a year have to relearn it every time. Regular local diving — even in Connecticut quarries or Long Island Sound — keeps the muscle memory sharp.

Foundations and Principles of Diving Course

Want to get your buoyancy, trim and propulsion dialed in. Join us for our distinctive specialty course. We will work with you in the pool and classroom to train you on all the skills and knowledge you need for wherever you diving interests lead. Our unique course utilizes filmed, in-water sessions with one of our Master Instructors to make sure you have all the skills necessary to be a great diver.