We have tested both the Dolphin Explorer E70 and the Dolphin Nautilus CC Plus in real pools, measured their suction at the intake, and lived with the filtration and daily routine each one requires. This comparison brings those results together so you can see the real-world trade-offs without relying on the numbers printed on either box.
Dolphin Explorer E70 and Dolphin Nautilus CC Plus are close enough in the same lineup that the feature and value differences matter as much as the badge.
The short answer: Dolphin Explorer E70 takes the head-to-head edge. Its 1.7 PSI reading, navigation, app, and three-year warranty make it a capable cleaner. Dolphin Nautilus CC Plus only makes sense for buyers who value a familiar, simple Dolphin platform and find it on sale. Because neither robot is in our top recommendation tier, we also suggest cross-shopping the Dolphin Sigma (2.0 PSI) before you buy.
Quick Answer
Between these two, pick the Dolphin Explorer E70 for buyers who find a major discount and specifically want its connected controls. It is the more complete option across the measurements and ownership factors we tested.
Consider the Dolphin Nautilus CC Plus only if you specifically prioritize buyers who value a familiar, simple Dolphin platform and find it on sale — and compare both against our recommended Dolphin Sigma (2.0 PSI) before checking out.
Our calls in the full reviews are Not recommended for the Dolphin Explorer E70 and Decent, but there are better buys for the Dolphin Nautilus CC Plus. Those calls matter here: PSI is the first round, not the entire verdict.
Suction Power: 1.7 PSI vs 1.5 PSI
On our hydro manometer, the Dolphin Explorer E70 measured 1.7 PSI and the Dolphin Nautilus CC Plus measured 1.5 PSI. That gives the Dolphin Explorer E70 a 0.2 PSI advantage, or about 13% more intake pressure than the lower reading.
We measure pressure directly at the intake with the same gauge and pool setup. That is different from manufacturer flow-rate claims in gallons per hour: GPH describes water movement, while PSI shows how hard the intake pulls on debris. Cordless results are recorded at full charge. Our complete pool-robot suction test explains the method and shows where both robots sit on the full board.
The number needs context. Its 1.7 PSI reading, navigation, app, and three-year warranty make it a capable cleaner. It offers steady 1.5 PSI corded power and easy-to-reach top-loading cartridges. The stronger gauge result gets this round, though intake pressure alone cannot make up for a filter that lets fine debris escape or a routine that makes you handle the robot every day.
Filtration and Debris Handling
The Dolphin Explorer E70 uses top-loading mesh basket without the filter versatility of the proline picks. The Dolphin Nautilus CC Plus uses top-loading mesh cartridges without a nanofilter upgrade path.
We give the filtration edge to the Dolphin Explorer E70. Our comparison favors fine-particle capture, usable debris capacity, easy cleaning, and whether the better filter is included rather than sold as an upgrade.
For leaves, capacity and intake design matter. For pollen, silt, and the haze that dulls otherwise clear water, the filter media matters more. A basic mesh screen can look clean after a run while still passing the smallest material back into the pool.
Automation and Daily Work
The Dolphin Explorer E70 is corded. Connected app control and scheduled corded cleaning. The Dolphin Nautilus CC Plus is corded. Limited app controls; no full scheduling or steering suite.
Because both are corded, neither needs a recharge. The meaningful question is how much scheduling and remote control each power supply or app provides.
The automation round goes to the Dolphin Explorer E70.
Coverage and Pool Fit
For the Dolphin Explorer E70, our review found floor, walls, and waterline with smart navigation. The Dolphin Nautilus CC Plus is built for floor and walls in standard inground pools.
The Dolphin Explorer E70 wins the coverage round on the breadth of surfaces and pool situations it can handle.
This is where the runner-up can still be the smarter fit for specific pools. A compact pool does not benefit from paying for reach it cannot use, while a pool with a sun shelf, long waterline, or heavy leaf load can expose the limits of a simpler machine quickly.
Value: Performance for the Money and Time
Our value take on the Dolphin Explorer E70: Capable but overpriced beside stronger, better-filtering Dolphins. For the Dolphin Nautilus CC Plus: Reliable, but newer Dolphins offer better automation or filtration for similar money.
The value edge goes to the Dolphin Nautilus CC Plus.
Value is not the same thing as the lowest checkout price. We count cleaning power, filtration, how many surfaces the robot covers, and how often you have to retrieve or charge it. A cheaper robot that leaves you vacuuming behind it is not a bargain, and an expensive robot only earns its price when its extra capability solves a real problem in your pool.
Recommended Upgrade to Cross-Shop: Dolphin Sigma
Neither model in this comparison sits in our top recommendation tier. Before buying, compare them against the Dolphin Sigma (2.0 PSI): Closest smart-flagship alternative: boosts suction from 1.5–1.7 PSI to 2.0 PSI across a 10-inch dual intake, includes top-load pleated NanoFilters, and keeps full underwater Wi-Fi app control with a 3-year warranty. See our direct matchups for Dolphin Explorer E70 vs Dolphin Sigma and Dolphin Nautilus CC Plus vs Dolphin Sigma.
Which One Should You Buy?
- Head-to-head pick — Dolphin Explorer E70: Best here for buyers who find a major discount and specifically want its connected controls. Its 1.7 PSI reading, navigation, app, and three-year warranty make it a capable cleaner.
- When Dolphin Nautilus CC Plus fits: Only for buyers who value a familiar, simple Dolphin platform and find it on sale. It offers steady 1.5 PSI corded power and easy-to-reach top-loading cartridges.
- Know the main drawback: Dolphin Explorer E70 — At its normal price, the Premier and Sigma deliver more suction and better filtration. Dolphin Nautilus CC Plus — The mesh-only filters, limited app, and lack of waterline cleaning make it feel dated.
Final Verdict
Dolphin Explorer E70 takes this head-to-head. Dolphin Explorer E70 wins this head-to-head. Its 1.7 PSI reading, navigation, app, and three-year warranty make it a capable cleaner. Dolphin Nautilus CC Plus remains the better fit for buyers who value a familiar, simple Dolphin platform and find it on sale, while the Dolphin Sigma is our top-rated step-up near this class.
Read the complete Dolphin Explorer E70 review and Dolphin Nautilus CC Plus review for every test photo, setup detail, and long-form ownership note. You can also return to all pool-robot comparisons to see any other matchup from the 19 cleaners in our test set.
