Scuba Diving in Washington State: Dive Sites & Tips

If you’ve ever stood along the Puget Sound and wondered what’s happening beneath the surface, it might be time to find out for yourself. Washington’s underwater world is teeming with life — bright sea stars, towering kelp forests, curious octopus, and old shipwrecks quietly resting on the seafloor.

Yes, the water is cold. But once you take that first breath underwater, everything else fades away. Whether you’re brand new to scuba or looking for your next cold-water challenge, Washington offers some of the most unique diving experiences in the country.

This post may contain affiliate links. This means that if you click on a link and make a purchase, I may earn a small commission at no additional cost to you. As an Amazon Associate, I earn from qualifying purchases. I only recommend products I genuinely believe add value to your outdoor adventures.

Learn to Scuba Dive in Washington

Before exploring Washington’s underwater world, you’ll need certification — and luckily, the state is home to excellent dive schools that make learning approachable, safe, and fun.

Seattle Dive Tours

Location: Seattle
Best for: First-time divers and small-group instruction

What to Expect

• Discover Scuba experiences and full PADI Open Water certification

• Small class sizes with lots of personal attention

• Supportive, beginner-friendly instruction

Pricing: Varies by course
Getting There: Easy access to Puget Sound training sites

Underwater Sports

Locations: Seattle, Tacoma, Bellevue
Best for: Full-service certification and gear support

What to Expect

• Structured Open Water Certification programs

• Pool sessions, classroom or online study, and four open-water dives

• One of the largest scuba retailers in the region

Pricing: Open Water Certification averages $595
Good to Know: Most rental gear is included

Argonaut Diving

Location: Bellevue
Best for: Year-round diving and dry suit training

What to Expect

• SDI and PADI certification programs

• Dry suit specialty courses (highly recommended for Washington waters)

Tip: Dry suit training extends your dive season well beyond summer.

Top Dive Sites Across Washington

Edmonds Underwater Park

Location: Edmonds
Level: Beginner to intermediate

Directions & Parking

• Near Brackett’s Landing North

• Free public parking nearby

• Short walk to shore entry

Cost: Free

What to Expect

• Protected marine sanctuary

• Sunken structures and artificial reefs

• Lingcod, rockfish, and occasional giant Pacific octopus

This is one of the best beginner-friendly dive parks in the state.

Saltwater State Park

Location: Des Moines
Level: Beginner

Directions & Parking

• Located just off I-5 between Seattle and Tacoma

• Parking close to shoreline access

Cost

• Washington Discover Pass or day-use fee required

What to Expect

• Artificial reef with underwater guide lines

• Mild currents and forgiving conditions

• Popular training and certification site

Sund Rock Marine Preserve

Location: Hood Canal
Level: Intermediate to advanced

Directions & Parking

• About two hours from Seattle

• On-site parking and easy shore access

Cost: Paid entry

What to Expect

• Dramatic kelp forests and rocky walls

• Wolf eels, giant Pacific octopus, colorful anemones

• Excellent visibility on calm days

Keystone Jetty

Location: Whidbey Island
Level: Advanced

Directions & Parking

• Near Fort Casey State Park

• Shore entry close to parking

Cost: Free

What to Expect

• Strong currents (tide planning is critical)

• Dense marine life and impressive biodiversity

• Best dove with local guides if unfamiliar

Lake Crescent

Location: Olympic National Park
Level: Beginner to intermediate

Directions & Parking

• Access via Highway 101

• Shore and boat dives available

Cost

• Olympic National Park entry fee or pass required

What to Expect

• Clear freshwater visibility

• Unique underwater geology

• A completely different experience from saltwater diving

What It Costs to Dive in Washington

• Scuba certification: $500–$700

• Daily cold-water gear rental: $60–$100

• Dry suit rentals: Often additional

If you plan to dive regularly, start by investing in your own mask, fins, snorkel, and dive computer, then build your kit over time.

What to Expect Beneath the Surface

Washington’s waters may be cold, but they are bursting with life.

• Giant Pacific octopus tucked beneath rocky ledges

• Wolf eels peeking from dens

• Curious sea lions and harbor seals

• Reefs covered in anemones and sea stars

Water temperatures: 45–55°F
Visibility: 10–60 feet depending on tides and conditions
Gear: 7mm wetsuit or dry suit recommended

Don’t Forget Your Gear

• Mask & fins (fit matters most)

• 7mm wetsuit or dry suit

• Gloves & hood

• Underwater camera

• Dry bag and towel

Why Washington Diving Is So Special

Scuba diving in Washington feels like discovering another world — one hidden just beneath the waves. Between the dramatic kelp forests, rugged shorelines, and surprisingly playful marine life, every dive feels earned and unforgettable.

So zip up your wetsuit, take that first breath, and dive in.
Washington’s underwater world is waiting — and it’s anything but ordinary.