Help me choose
A stronger Pool Express option
Dolphin Nautilus CC 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
Inground and above-ground pools up to 33 ft that need floor and wall cleaning.
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 or Dolphin T15: our take
Dolphin Nautilus CC 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 is intended for inground and above-ground pools, while Dolphin T15 is intended for above-ground pools. Dolphin Nautilus CC is rated for pools up to 33 ft; Dolphin T15 is rated up to 30 ft. Dolphin Nautilus CC cleans floor and walls; Dolphin T15 cleans floor. Dolphin Nautilus CC's documented cleaning system includes 1 active brush.
Filtration and debris
Both models include Basket.
Controls and day-to-day ownership
Both models provide one-touch starts and power-supply controls. Dolphin Nautilus CC uses a 50 ft corded cable, while Dolphin T15 uses a 40 ft corded cable.
Price, warranty and the decision
Dolphin Nautilus CC is listed at $699 and Dolphin T15 at $649; Dolphin T15 is $50 less. Each lists a 2-year manufacturer warranty. Dolphin Nautilus CC 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 | Dolphin T15 |
|---|---|---|
| Cleans the pool floor | Yes | Yes |
| Climbs and cleans walls | YesEdge | No |
| Scrubs the waterline | No | No |
| Fine-debris filter included | No | No |
| Large-debris filter | Yes | Yes |
| Automatic scheduling | No | No |
| Smartphone app | No | No |
| Anti-tangle swivel | No | Not listed |
| 3-year warranty | No | 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 stands out
Dolphin Nautilus CC is the better fit for pools up to 33 ft.
- Adds wall climbing and scrubbing
- Is rated for pools up to 33 ft
Where Dolphin T15 stands out
Dolphin T15 is the better fit for shoppers prioritizing the lower $649 starting price.
- Is listed $50 lower
- Cleans the pool floor
Dolphin Nautilus CC 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 | Dolphin T15 |
|---|---|---|
| Best fit | Inground and above-ground pools up to 33 ft that need floor and wall cleaning. | Above-ground pools up to 30 ft that need floor cleaning. |
| Starting price | $699 | $649 |
| Pool type | Inground, Above-ground | Above-ground |
| Maximum pool length | Up to 33 ft | Up to 30 ft |
| Cleaning coverage | Floor, Walls | Floor |
| Power | Corded | Corded |
| Filtration | Basket | Basket |
| Scheduling | One-touch start | One-touch start |
| App and remote | Power-supply controls | Power-supply controls |
| Cable | 50 ft | 40 ft |
| Robot weight | Not listed | 14 lb |
| Warranty | 2 years | 2 years |
Consider the stronger Pool Express option
Dolphin Nautilus CC 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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