Mystery Reef
Why dive here
With 35+ marine species recorded in the area - including humpback whales, orcas and seals & sea lions - Mystery Reef offers some of Pacific Northwest's richest reef diving. Water ranges 7-17°C, warmest July, August, September.
Mystery Reef, despite its name, isn't much of a mystery once you’re down there. It’s a classic Pacific Northwest dive – think emerald green water and a surprising amount of invertebrate action. We love the sheer density of life clinging to every surface. You'll find walls carpeted in colorful anemones and nudibranchs, with huge lingcod peeking out from rocky crevices. Our favorite finds here are the smaller critters. Keep an eye out for the Four-Spined Squat Lobsters tucked into cracks and the delicate Pacific Glass Shrimp hovering near the sponges. We've even spotted curious Blackbelly Eelpouts slinking through the rocky rubble. The currents can pick up, so it's best for divers comfortable with a bit of a drift, but the payoff is worth it. It’s a site that really rewards a slow, deliberate dive, letting your eyes adjust to the subtle movements in the kelp and the vibrant hues of the invertebrates.
Safety Notes
Cold water this month (avg 11°C). Drysuit or thick wetsuit (7mm+) recommended.
Nearest Dive Centres to Mystery Reef
Dive shops near Mystery Reef
Salish Sea Dive Inc.
Pacific Pro Dive
UB Diving
Oceanfix.ca
Reviews for Mystery Reef
Conditions
Ocean conditions, forecast and tides for Mystery Reef
Mystery Reef Ocean Conditions
Monthly averages for Mystery Reef, sourced from NOAA NDBC + Copernicus Marine (EU) - nearest station: 9449880 - Friday Harbor, WA (27km away)
October Averages
Sea Temperature
11°C
53°F · Range: 9.6–11.4°C
Air Temperature
11°C
51°F
Current Speed
3.16 cm/s
Direction: E (108.4°)
Salinity
23.61 PSU
Wind Speed
1.8 m/s
3.5 knots
Atmospheric Pressure
1018.3 hPa
Based on 5 years of monitoring data · Data sources: NOAA NDBC + Copernicus Marine (EU)
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