We track 9 dive operators in Edmonds & Mukilteo. 4 teach certification courses (4 PADI, 2 SDI). 1 run snorkelling trips. Listings are ordered by Fin Rank: a published score for how complete and verified each listing is.

Lighthouse Diving Center is a dive shop and training facility established in 1972, offering sales of new and pre-owned equipment for recreational and commercial diving, as well as freediving and snorkeling. They provide a range of dive training courses and are known for their focus on customer experience.
Argonaut Diving is a dive school offering a range of courses from beginner to instructor levels, using both PADI and SDI certification systems. They also organize local and international dive trips, and monthly fun dives. Their focus is on dive education and safety, rather than gear sales.
Evergreen Dive Service is a dive school located in Everett, Washington. They offer services with operational business status. The business has a 4.7-star rating from 53 reviews.
Edmonds Underwater Sports is a dive center that provides scuba diving training and equipment services. The shop offers onsite equipment servicing, tank fills, and hydrostatic testing.
Underwater Sports is a dive shop that provides scuba diving training and equipment. The Edmonds location offers onsite equipment servicing, tank fills, and hydrostatic testing.
The 8 highest-ranked of 9. How Fin Rank works
| Rank | Operator | TripAdvisor | Try dive | Agencies | Website | |
|---|---|---|---|---|---|---|
| 1 | 4.5(111) | none | none | PADI · SDI | Visit |
Which centres run each site, named on their own websites or confirmed by the owner.

Fin lists 9 dive operators in Edmonds & Mukilteo. 4 of them run certification courses.
PADI is the most common agency (4 centres), followed by SDI (2).
1 of the 9 operators we track run snorkelling tours.
Operators are sorted by Fin Rank, a 100-point profile strength score: contact details, what they offer, the dive sites they run, their Google reputation, whether the owner has claimed the listing, and whether their own website links to Fin. 0 listings here are owner-verified. The formula is published in full on the Fin Rank page.
| 2 | Argonaut Diving | 4.9(50) | none | none | PADI · SDI | Visit |
| 3 | Evergreen Dive Service | 4.7(53) | none | none | none | Visit |
| 4 | Edmonds Underwater Sports | none | none | none | PADI | Visit |
| 5 | Northwest Sports Divers | none | none | none | PADI | Visit |
| 6 | YSS Dive Charters | none | none | none | none | Visit |
| 7 | Seattle Scuba Schools | none | none | none | none | none |
| 8 | Starfish Enterprise, Exploring Inner Space | none | none | none | none | none |