Edmonds Underwater Park - Pacific Northwest

Edmonds Underwater Park, or "EUP" as we often call it, is a genuine standout in the Pacific Northwest. Forget about sun-drenched reefs; here, it’s about the hunt, the thrill of spotting something extraordinary in the murk. We love the quirky, cold-water critters that call this place home. Descend into the kelp and you’ll find giant pacific octopuses tucked into crevices, their eyes watching you with unnerving intelligence. Look closely on the pilings and you'll spot nudibranchs, particularly the striking Puget Sound King Crab. Our favourite time to dive EUP is during a high slack tide, preferably on a sunny weekend morning when the light penetrates just enough to make the anemones glow. You’ll weave through artificial reefs, old boats, and even a sunken dock. Keep an eye out for the resident wolf eels, they're surprisingly personable once you get to know them. The park can get busy, especially the closer parking spots, so we'd suggest arriving early. It’s a site that rewards patience and a keen eye, perfect for photographers and anyone who loves discovering the unusual.

Location
Pacific Northwest, United States, North America
Coordinates
47.813710, -122.384575

Marine Protected Area: Brackett's Landing Shoreline Sanctuary Conservation Area

Best Time to Dive in Pacific Northwest

The warmest water temperatures in Pacific Northwest occur in August, averaging 16.5°C (up to 15.6°C). The coolest conditions are in February at 6.9°C.

Monthly Water Temperatures

  • January: 7.1°C (air: 6.3°C)
  • February: 6.9°C (air: 4.5°C)
  • March: 7.7°C (air: 6.6°C)
  • April: 9.5°C (air: 8.7°C)
  • May: 12.0°C (air: 11.7°C)
  • June: 14.0°C (air: 13.7°C)
  • July: 15.7°C (air: 14.9°C)
  • August: 16.5°C (air: 15.7°C)
  • September: 14.3°C (air: 14.0°C)
  • October: 11.4°C (air: 10.5°C)
  • November: 8.8°C (air: 7.4°C)
  • December: 7.7°C (air: 5.5°C)

Nearby Dive Sites in Pacific Northwest

Nearest Dive Centres to Edmonds Underwater Park

Marine Life in Pacific Northwest

Home to 38 recorded species including 18 reef fish, 7 crabs & lobsters, 3 whales & dolphins, 2 sharks & rays, 2 clams & mussels, 2 sea urchins.

Notable Species

Recommended Packing List for Edmonds Underwater Park

Based on average water temperature of 11.0°C, currents 7 cm/s.

  • Wetsuit (5-7mm) - recommended for 11°C water
  • Hood & Gloves (3-5mm) - helps retain warmth
  • Mask - essential for every dive
  • Fins
  • BCD - buoyancy compensator
  • Regulator - your most safety-critical piece of gear
  • Dive Computer - tracks depth, time, and NDL
  • Surface Marker Buoy (SMB) - essential for boat pickups
  • Dive Torch - useful for crevices and colour at depth
  • Underwater Camera - capture your diving memories