Help me choose
A stronger Pool Express option
Dolphin Nautilus CC Supreme and Dolphin T15 are compared feature by feature below. For a stronger Pool Express option, consider Dolphin Cayman. Inground and above-ground pools up to 40 ft that need floor and wall cleaning.
Nautilus
Dolphin Nautilus CC Supreme
Inground pools up to 50 ft that need floor, wall and waterline cleaning, with fine debris.
What we recommend instead
Dolphin Cayman
Inground and above-ground pools up to 40 ft that need floor and wall cleaning.
$1,079
Buy Dolphin CaymanDolphin Nautilus CC Supreme or Dolphin T15: our take
Dolphin Nautilus CC Supreme and Dolphin T15 are compared on pool fit, cleaning reach, debris handling, controls and ownership details. The recommendation is based on the job the robot must do—not a simple feature count.
Pool fit and cleaning reach
Dolphin Nautilus CC Supreme is intended for inground pools, while Dolphin T15 is intended for above-ground pools. Dolphin Nautilus CC Supreme is rated for pools up to 50 ft; Dolphin T15 is rated up to 30 ft. Dolphin Nautilus CC Supreme cleans floor, walls, and waterline; Dolphin T15 cleans floor. Dolphin Nautilus CC Supreme lists 2 active brushes and CleverClean navigation. Dolphin T15 lists 1 active brush.
Filtration and debris
Dolphin Nautilus CC Supreme includes Standard filter and UltraFilter; Dolphin T15 includes Basket. That gives Dolphin Nautilus CC Supreme the clearer documented edge for fine silt, pollen and sand. Dolphin T15 has the better documented path for bulky leaves and larger debris.
Controls and day-to-day ownership
Dolphin Nautilus CC Supreme provides a weekly timer, smartphone control, and included remote control; Dolphin T15 provides one-touch starts and power-supply controls. Dolphin Nautilus CC Supreme uses a 60 ft corded cable with an anti-tangle swivel, while Dolphin T15 uses a 40 ft corded cable.
Price, warranty and the decision
Dolphin Nautilus CC Supreme is listed at $1,599 and Dolphin T15 at $649; Dolphin T15 is $950 less. Dolphin Nautilus CC Supreme lists a 3-year warranty compared with 2 years for Dolphin T15. Dolphin Nautilus CC Supreme and Dolphin T15 each have a specific fit, but neither is the Pool Express pick for this job. Our better alternative is Dolphin Cayman. Inground and above-ground pools up to 40 ft that need floor and wall cleaning.
Feature check: what each robot actually has
A green check means the feature is documented as included. A red X means it is documented as absent. A dash means the source does not make the feature clear.
| Feature | Dolphin Nautilus CC Supreme | Dolphin T15 |
|---|---|---|
| Cleans the pool floor | Yes | Yes |
| Climbs and cleans walls | YesEdge | No |
| Scrubs the waterline | YesEdge | No |
| Fine-debris filter included | YesEdge | No |
| Large-debris filter | No | YesEdge |
| Automatic scheduling | YesEdge | No |
| Smartphone app | YesEdge | No |
| Anti-tangle swivel | Yes | Not listed |
| 3-year warranty | YesEdge | No |
| No recharging between cycles | Yes | Yes |
| Built-in UV-C water treatment | No | No |
Unknown is not treated as “no.” Specifications come from the product pages, current catalog records and manufacturer material collected for this site.
Where Dolphin Nautilus CC Supreme stands out
Dolphin Nautilus CC Supreme is the better fit for pools up to 50 ft.
- Cleans the floor, walls and waterline instead of stopping below the tile line
- Includes filtration for sand, pollen and other fine debris
- Uses 2 active brushes instead of 1
- Can start on a weekly schedule without a manual launch before every cycle
Where Dolphin T15 stands out
Dolphin T15 is the better fit for shoppers prioritizing the lower $649 starting price.
- Includes a large-debris bin or bag for leaves
- Is listed $950 lower
Dolphin Nautilus CC Supreme vs Dolphin T15 specifications
Use pool fit first. Price and app control do not make up for a robot that cannot cover the length or surfaces you need cleaned.
| Specification | Dolphin Nautilus CC Supreme | Dolphin T15 |
|---|---|---|
| Best fit | Inground pools up to 50 ft that need floor, wall and waterline cleaning, with fine debris. | Above-ground pools up to 30 ft that need floor cleaning. |
| Starting price | $1,599 | $649 |
| Pool type | Inground | Above-ground |
| Maximum pool length | Up to 50 ft | Up to 30 ft |
| Cleaning coverage | Floor, Walls, Waterline | Floor |
| Power | Corded | Corded |
| Filtration | Standard filter, UltraFilter | Basket |
| Scheduling | Weekly schedule + app | One-touch start |
| App and remote | App + included remote | Power-supply controls |
| Cable | 60 ft with anti-tangle swivel | 40 ft |
| Robot weight | Not listed | 14 lb |
| Warranty | 3 years | 2 years |
Consider the stronger Pool Express option
Dolphin Nautilus CC Supreme and Dolphin T15 are compared feature by feature below. For a stronger Pool Express option, consider Dolphin Cayman. Inground and above-ground pools up to 40 ft that need floor and wall cleaning.
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