Dolphin's model names — Nautilus, Cayman, Premier, Quantum, Sigma, Explorer, Liberty, Escape — sound like someone spilled alphabet soup into a product catalog. The good news: you can ignore most of them. Choose a Dolphin by pool size, how much coverage you need (floor, walls, or waterline too), filtration, and whether you want a cord or a battery. Everything else is branding.
This is a research-based hub, not a hands-on test — use it to narrow the field, then confirm the exact specs on the retailer or manufacturer page before buying.
Dolphin models at a glance
| Model | Power | Coverage | Best for |
|---|---|---|---|
| Dolphin Nautilus CC Plus | Corded | Floor & walls, to 33 ft | Best overall value |
| Dolphin Nautilus CC | Corded | Floor & walls, to 33 ft | Cheapest proven pick |
| Dolphin Nautilus CC Supreme | Corded | Floor, walls & waterline, fine filters | Fine debris + app |
| Dolphin Premier | Corded | Floor, walls & waterline, to 50 ft, leaf bag | Leaves & mixed debris |
| Dolphin Quantum | Corded | Floor, walls & waterline, ultra-fine filters | Fine dust & silt |
| Dolphin Liberty 400 | Cordless | Floor, walls & waterline, to 33 ft | Cordless, smaller pools |
| Dolphin Liberty 600 | Cordless | Floor, walls & waterline, to 50 ft | Cordless, larger pools |
| Dolphin E10 | Corded | Floor only | Above-ground pools |
| Dolphin Cayman | Corded | Floor & walls, to ~40 ft | Budget value |
| Dolphin Explorer E70 | Corded | Floor, walls & waterline, app | Dealer-line premium |
Best overall: Dolphin Nautilus CC Plus
For a standard in-ground pool up to 33 feet, the Dolphin Nautilus CC Plus is the one most people should buy. It nails floor-and-wall cleaning, the top-load cartridges lift straight out to rinse, and it runs off its own plug with no booster pump. It skips waterline scrubbing and an app, which is exactly what keeps it affordable and reliable.
Best for leaves: Dolphin Premier
The Dolphin Premier's oversized, swappable leaf bag is the killer feature for a pool under trees — it swallows the volume without clogging, then takes fine media when the season turns. It cleans floor, walls, and waterline to 50 feet with a 3-year warranty. No app; this is a debris specialist, not a gadget.
Best cordless: Dolphin Liberty 600
The Dolphin Liberty 600 is the safest cordless Dolphin — full coverage to 50 feet, a long charge, and the longest confirmed cordless warranty, all backed by Maytronics' service network. The Dolphin Liberty 400 does the same for smaller pools. Neither skims the surface, so floating leaves still need a net.
Best for fine debris: Dolphin Quantum
If dust, pollen, and silt cloud your water, the Dolphin Quantum includes fine and ultra-fine filtration without an app premium. It cleans the waterline to 50 feet on a weekly timer, corded. You're paying for filtration, not gadgets — which is the right call when clarity is the problem.
Best for above-ground pools: Dolphin E10
The Dolphin E10 is purpose-built for above-ground pools — a true floor-cleaning robot with its own filter and no pump hookup. It's the trusted budget pick for a soft-walled pool, where floor-only is exactly right.
How to choose a Dolphin
Pick corded (set-and-forget, no battery to age) or cordless (the Liberty line) first. Then match coverage — floor-only, floor-and-wall, or full waterline — to what your pool actually needs, and step up to fine filtration only if dust is your recurring problem. Name aside, that's the whole decision.
This is a research-based review — our analysis draws on manufacturer specifications, manuals, warranty terms, and verified owner feedback rather than our own hands-on testing, and we note where a detail couldn't be confirmed. How we review
Frequently asked questions
Are Dolphin pool cleaners worth it?
Dolphin pool cleaners can be worth it if you want a corded robotic cleaner with established support, replaceable parts, and model options for floors, walls, and waterline cleaning. The right model depends on your pool size, debris, and filter needs.
What is the main difference between Dolphin models?
The big differences are pool size rating, floor-only versus wall/waterline cleaning, filtration style, navigation, app control, weekly timers, cable features, and warranty length.
How long is the warranty on a Dolphin pool cleaner?
Maytronics says Dolphin warranty length varies by model and typically ranges from 24 to 36 months. Buyers should confirm the exact warranty on the specific product page before purchasing.
Can you leave a Dolphin robot in the pool all the time?
It is usually better to remove the robot after the cleaning cycle, rinse the filters, and store it properly. Check the specific manual for your model.
Which Dolphin pool cleaner should I buy?
Start with pool size, surface type, debris type, wall/waterline needs, and budget. Then compare models by the features that solve those problems instead of choosing by model name alone.
