2 Ways to Dive for 3+ Hours Without Tanks
No tanks. No heavy gear. Just air from the surface — for up to 3+ hours.
Choose the tankless dive system that fits your day on the water — Sea LiON for multiple divers, or BLU3 systems for portable, go-anywhere diving.
Which Tankless Dive System Is Right for You?
Sea LiON
One system supports multiple divers at once. Perfect for family diving, lobstering, and staying in the water longer with your crew.
BLU3 Systems
A true single-diver setup with unmatched portability. Compact, lightweight, and airplane travel friendly.
Compare Your Options
| Feature | Sea LiON | BLU3 Systems |
|---|---|---|
| Starting Price Range | $5,495–$7,995 | $1,649–$2,199 |
| Best For | Group diving, boating, lobstering | Solo diving, travel, portability |
| Power Source | Swappable lithium-ion battery packs | Swappable lithium-ion battery packs |
| Divers Supported | Up to 3 divers | 1 diver |
| Max Depth | 33–65 ft (by system) | 15–30 ft (by system) |
| Run Time | 2–3+ hours | 40 minutes–3 hours |
Best Fit for Your Dive
Sea LiON: Set up one system for multiple divers. Ideal for family diving, lobstering, and staying in the water longer with your crew.
BLU3 Systems: A single-diver setup built for portability. The most compact tankless systems available — easy to travel with and airplane friendly.
Looking for a Lower-Cost Option?
Explore gas-powered systems with longer runtime and lower upfront cost.
Built in South Florida since 1969. Trusted tankless dive systems used by thousands of divers worldwide.