Avelo on Catalina
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The Avelo System is an open circuit diving system where the buoyancy control device is the tank itself.
It consists of two components, the Jetpack and the Hydrotank.
When you add water to the Hydrotank you become heavier and when you purge water you become lighter.
The Avelo System is nearly half the weight of standard scuba and redefines your diving experience by providing Perfect and Stable Neutral Buoyancy.
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Nearly half the weight of standard scuba
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Easier to learn and use
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Streamlined, so it’s easier to move underwater and focus on the underwater world
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Improves air consumption -- which means longer dives
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Safer than standard scuba
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Buoyancy does not change with depth
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The diver is neither pulled down or up by any force and instead swims freely
How it works
The Avelo System is a lightweight system that allows you to remove buoyancy from the tank itself. It is positively buoyant on the surface and becomes neutrally buoyant in the water when a diver adds water to the Hydrotank. ​
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Still have questions? Check out this video from The Scuba Diving Channel.
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Recreational Avelo Diver Options
The Avelo System is an open-circuit diving system that fundamentally simplifies buoyancy control by integrating it directly into the tank. Instead of relying on a traditional buoyancy control device, Avelo uses a smart, weight-based approach: adding water to the Hydrotank increases mass, while purging water reduces it. This single-variable system creates predictable, stable buoyancy behavior throughout the dive.
Built around two components—the Jetpack and the Hydrotank—the Avelo System reduces overall equipment weight by nearly half compared to standard scuba, minimizing complexity and physical load. Because buoyancy is independent of depth and air consumption, divers experience consistent neutral buoyancy without constant adjustment. The result is a streamlined, low-drag profile that improves air efficiency, extends dive time and allows the diver to move freely without being pushed up or pulled down.
By removing fluctuating forces and reducing decision overhead, the Avelo System delivers a safer, easier-to-learn diving experience focused on stability, efficiency and control—allowing divers to concentrate on the underwater environment rather than managing equipment.