Introduction
The Aiper Seagull SE and the Dolphin Nautilus CC Plus aim at different wallets, one budget, one mid-range. I bought both to see how they really perform and, more importantly, which one gives you the most for what you spend while keeping a pool clean.
My review of the Aiper Seagull SE turned up the same problems again and again: it needs charging every day, it only cleans the floor, and it has no navigational smarts. It's cheap, sure, but it kept leaving debris behind and sometimes couldn't even get over a simple incline. The battery is a bit better than before, but the overall performance still didn't hold up, and a slightly faster charge doesn't fix a robot that can't clean walls or navigate.
The Dolphin Nautilus CC Plus is a clear step up. It climbs walls and cleans floors more efficiently. It's not perfect either. It skips the waterline, and it doesn't have advanced filtration like NanoFilters. It's still running older Gen-1 filters that struggle with the finer stuff.
"Know what each robot does well and where it falls apart. That's how you pick the right one."
I scored both against the same testing criteria so you get a straight, useful comparison. Neither one is the last robot you'll ever buy, but one of them is clearly the better use of your money, and I'll show you why. Next I'll walk you through exactly how I put these robots through their paces.
How We Test
At Pool Pad, I run every robot for three months before I score it. That's the only way to really understand what a cleaner does well, where it slips, and whether it holds up over time. My goal is a review that's honest and complete, not a first-impression snapshot.
"Test it long enough and the robot tells you the truth about itself."
For the Aiper Seagull SE, I ran daily tests in a standard-sized pool, watching its floor cleaning, its battery, and its navigation. Good-looking robot, but it needed charging over and over and couldn't get around the pool efficiently. It kept missing debris and hanging up on inclines.
I put the Dolphin Nautilus CC Plus through the same wringer in a slightly larger pool. Because it cleans both walls and floors, it did well on navigation and cleaning efficiency. Where it disappointed was the waterline, which it skips, and the lack of NanoFilters was a clear miss.
"Test across different pools and different messes, and the real performance shows up."
Across the three months, the Nautilus CC Plus handled everyday debris easily but struggled with finer particles because of its older Gen-1 filters. That gap really stood out next to a robot like the Dolphin Quantum, which comes with NanoFilters for much better filtration.
I also tracked how easy each one was to live with day to day, the maintenance and the overall experience. The Aiper Seagull SE kept demanding attention, constant charging and manual adjustments because it has no navigational intelligence, and that made routine upkeep a hassle.
The Nautilus CC Plus was much more hands-off, especially with its weekly timer. I could set a schedule and let it run without babysitting it every day, which cut down my pool time a lot.
"Being able to set it and forget it changes how a pool robot fits your life."
By the end, the Seagull SE read to me as an entry-level robot that struggled with real cleaning jobs, especially in larger pools. The Nautilus CC Plus is more capable, but it still has room to grow on filtration and waterline cleaning, areas where a robot like the Dolphin Premier pulls ahead.
Testing this way is how I make sure my recommendations actually hold up. Check back soon as I keep testing and reviewing the best options out there.
Coverage
The Aiper Seagull SE is an entry-level robot that cleans the floor and nothing else. It only handles the flat surfaces at the bottom of the pool, and it struggles with inclines and slopes. There's no navigation system on board, so it takes a random path and leaves plenty of spots untouched.
The Dolphin Nautilus CC Plus reaches a lot more of the pool. Unlike the Seagull SE, it climbs walls, so you get a proper clean on both floors and walls. It does fall short on the waterline, but its advanced navigation keeps the cleaning efficient and systematic across the rest of the pool.
"Real coverage means more than the floor. Climbing walls is what separates these two."
Each robot has its trade-offs. The Seagull SE loses out because it can't clean walls or navigate with any purpose, while the Nautilus CC Plus makes up ground with dual scrubbing brushes and much better maneuverability. Its one real gap on coverage is the waterline, which is exactly where a lot of debris and grime collects.
The scores line up with all of that. The Seagull SE earned a coverage score of 1.5, which fits its narrow range and its inefficiency across different surfaces. The Dolphin Nautilus CC Plus scored 3.5, better but not perfect. Climbing walls adds real value, though the missing waterline keeps it from a higher mark.
"A better coverage score means you're not out there finishing the job by hand."
Testing both made it plain that the Nautilus CC Plus outcovers the Seagull SE. That higher score justifies the price by cutting down the manual work you have to do, whereas the Seagull SE keeps pulling you back in to finish what it missed.
If you want strong coverage without spending a fortune, the Dolphin Cayman is worth a look. It balances cost and performance well, climbing walls and cleaning efficiently without giving up much.
Bottom line: the Nautilus CC Plus leads on coverage between these two, but the right pick still depends on your pool. Whether you go with the simple entry-level Seagull SE or the more capable but still imperfect Nautilus CC Plus, knowing where each one shines and where it doesn't is what gets you to the right choice.
Filters
The Aiper Seagull SE uses a flat filter meant to catch standard pool debris, and it comes up short in a few ways. It can't handle microscopic particles like algae or fine dirt, and that really drags down its filtration overall.
"Filtration is what stands between you and clear water. It matters more than people think."
The Dolphin Nautilus CC Plus has a more capable filtration setup. Its standard fine filter handles everyday debris like leaves and small twigs well enough. But it doesn't include NanoFilters, and that really limits how well it clears fine particles from the water.
The Nautilus CC Plus still edges out the Seagull SE, partly because it cleans walls, where debris loves to gather. And even without NanoFilters, its dual scrubbing brushes get a more thorough clean than the Seagull SE's static ones.
"Pulling out the microscopic stuff is exactly where advanced filters earn their money."
Held up against better robots, though, both of these fall short. The Dolphin Quantum uses an advanced NanoFilter system that grabs the fine particles these two let slip, and it sets a higher bar. The fact that the Nautilus CC Plus skips that is a real missed opportunity.
On debris capture, the Seagull SE struggles more than the Nautilus CC Plus. Both can manage larger debris like leaves, but neither handles the fine stuff well without advanced filters. The Nautilus CC Plus still comes out a little ahead overall thanks to its broader cleaning.
"How well a robot filters shows up directly in how clean your pool looks."
On the scores, the Seagull SE managed just 1.5 on filtration while the Nautilus CC Plus hit 2. The Nautilus is better, but neither is anything special. For truly efficient filtration, advanced robots like the Dolphin Premier or the Dolphin Quantum are the ones to look at.
So the Dolphin Nautilus CC Plus takes the filtration category. Its broader coverage and dual scrubbing brushes give it a slight edge, even with that dated filter. For the cleanest possible pool, though, I'd steer you toward a model with NanoFilters.
The Aiper Seagull SE is the budget pick, but its filtration is a real weak point. The Dolphin Nautilus CC Plus is better, yet still not at the top of the class. Knowing those strengths and limits is how you make the right call for your pool.
Feature Set
On features, the gap between the Aiper Seagull SE and the Dolphin Nautilus CC Plus is stark. The Seagull SE's feature list is bare-bones, basically a cordless design and a faster-charging battery. The Nautilus CC Plus adds a programmable timer and dual scrubbing brushes, which makes it the more capable robot.
"The more a robot handles on its own, the less pool work lands on you."
One of the Nautilus CC Plus's best features is its programmable timer. You can set it to run daily, every other day, or every three days, which is genuinely convenient. The Seagull SE has nothing like it, so you're stuck manually starting and stopping it after every charge. If you want a hands-off robot, that's a big strike against it.
The Nautilus CC Plus also has dual scrubbing brushes that do real work knocking debris loose. That gets a more thorough clean than the Seagull SE's static brushes, which barely scrub at all. You can see the difference in how each one deals with stuck-on dirt and algae, active brushes just win.
"Active scrubbing brushes make a real, visible difference in how clean the pool gets."
On charging and usability, the Aiper Seagull SE does have a quick-charge feature that cuts charge time from 4-6 hours down to 2.5 hours. That's a nice improvement, but it's undercut by how often you have to recharge it. Constantly pulling the unit out to charge breaks up any real automated routine.
Warranty is another big one. The Seagull SE gives you a one-year warranty, which looks thin next to the 2.5-year warranty on the Nautilus CC Plus. A longer warranty tells you the maker trusts the product, and it saves you money and worry if something breaks down the line.
"A longer warranty is a company betting on its own robot, and that's worth something."
Add it all up and the Seagull SE lands a feature score of just 1 out of 5, weighed down by the lack of automation, no navigation smarts, and its thin functionality. The Dolphin Nautilus CC Plus scores a respectable 3.5 out of 5 on the strength of its programmable timer, effective brushes, and longer warranty, even though it's missing NanoFilters.
So while the Aiper Seagull SE gives you basic, fairly weak features, the Dolphin Nautilus CC Plus brings more that's actually useful, which makes it the better call for a thorough, hands-off clean. If you want even more features and performance, models like the Dolphin Quantum or the Dolphin Premier are worth a look.
Conclusion
After putting the Aiper Seagull SE and the Dolphin Nautilus CC Plus head to head, the differences were big. The Seagull SE, cheap as it is, scored just 2.6 overall, dragged down by its lack of navigational intelligence, its floor-only coverage, and its weak filtration. The Dolphin Nautilus CC Plus landed a 6 overall, doing better on wall cleaning and navigation but still coming up short on filtration and the waterline.
Head to head, the Dolphin Nautilus CC Plus clearly outdoes the Aiper Seagull SE. It cleans more thoroughly and navigates better, which makes it the stronger of the two. Both still have real limits, especially the missing advanced filtration like NanoFilters.
"If you want a genuinely clean pool, advanced filtration is where it starts."
If you're after higher performance and better filtration, I'd look at alternatives like the Dolphin Quantum or the Dolphin Premier. Those bring NanoFilters, better navigation, and full cleaning from the floor up to the waterline.
All told, neither the Aiper Seagull SE nor the Dolphin Nautilus CC Plus is perfect, but the Nautilus CC Plus gives you better value and better performance. This comparison is a good reminder to consider stronger models for really effective cleaning, which makes a solid case for alternatives like the Dolphin Quantum and the Dolphin Premier.
Hopefully this gives you what you need to choose the right robot. Check back with the Pool Pad team for regular updates and reviews as I keep testing gear to help you take care of your pool.
Alternate Robots
While I was hunting for the best robotic pool cleaners, I tested a few other top-rated models worth putting on your list. Each brings something the Aiper Seagull SE and Dolphin Nautilus CC Plus don't.
Take the Dolphin Escape, an above-ground cleaner that really delivers on performance and efficiency. Its HyperBrush and SmartNav 2.0 navigation give it excellent floor coverage, and unlike the Seagull SE, its tracking makes sure it doesn't skip spots.
The Dolphin Quantum is another standout, part of the newer ProLine series. Its XXL MaxBin and NanoFilters make it great at catching both fine particles and large debris, and its Powerjet 3D mobility cleans thoroughly, including the waterline, which is exactly where both the Seagull SE and the Nautilus CC Plus fall short.
If you want something versatile, the Dolphin Cayman is another good one. It has a programmable timer, HyperBrush, and the ability to climb walls, so it's a strong all-around cleaner that handles a range of pool challenges. It bridges the gap between affordable and high-performing nicely.
Bottom line, when you're picking a pool robot, it pays to look at models with more complete features. The Dolphin Quantum, Dolphin Escape, and Dolphin Cayman are all strong alternatives, each bringing better cleaning tech and efficiency to the table. For more on my top picks, check out the best pool robots page.