Blake Island Reef
Protected Area
Blake Island Underwater Park
Why dive here
With 35+ marine species recorded in the area - including humpback whales, orcas and seals & sea lions - Blake Island Reef offers some of Pacific Northwest's richest reef diving. Water ranges 7-17°C, warmest July, August, September.
Blake Island Reef delivers a dive that’s classic Puget Sound. We love the drift here, it’s often a gentle ride, letting you really soak in the details. You’ll weave through fields of plumose anemones, their white tentacles swaying like miniature feather dusters, contrasting sharply with the olive greens and rusts of the rock walls. Keep your eyes peeled for the sunflower stars, massive and often on the move, and we almost always spot some colourful nudibranchs hunkering down. It’s a site that rewards a slow pace and a keen eye. We’d suggest diving this one on a calm day, an hour or so after slack high tide for the best drift. It’s ideal for photographers or divers who appreciate the subtler beauty of temperate waters over tropical flash. You get a real sense of the Pacific Northwest underwater ecosystem, from the sculpins tucked into crevices to the occasional glimpse of a slender crab scuttling across the substrate.
Safety Notes
Cold water this month (avg 11°C). Drysuit or thick wetsuit (7mm+) recommended.
Nearest Dive Centres to Blake Island Reef
Dive shops near Blake Island Reef
Seattle Dive Tours
Exotic Aquatics Ltd.
Discount Divers
TL Sea Diving LLC
Underwater Sports
Underwater Sports
Reviews for Blake Island Reef
Conditions
Ocean conditions, forecast and tides for Blake Island Reef
Blake Island Reef Ocean Conditions
Monthly averages for Blake Island 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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