Joan Rock
Protected Area
Kellett Bluff Voluntary No-take
Why dive here
With 35+ marine species recorded in the area - including humpback whales, orcas and seals & sea lions - Joan Rock offers some of Pacific Northwest's richest pinnacle diving. Water ranges 7-17°C, warmest July, August, September.
Joan Rock, for us, is a consistent standout in the often-moody Pacific Northwest. What makes it special isn’t some massive wreck or an epic wall; it’s the sheer density of small, weird, wonderful life you’ll find tucked into every crevice. We love dropping in on a calm day, slipping down into that emerald green glow, and just hovering. It’s a fantastic site for those who appreciate the smaller stuff. We’ve spent entire dives here simply peering under ledges, spotting countless Yellowleg Pandalids waving their antennae, or trying to tease out a Horned Shrimp from its hiding spot. Keep an eye out for Spotted Ratfish gliding by in the deeper sections, their long tails trailing behind them. On the surface, the seabirds – Marbled Murrelets, Guillemots, Double-crested Cormorants – are a constant, noisy presence, a good reminder of the rich ecosystem above and below. Our tip: go slow, bring a good torch, and be prepared to spend time looking closely. It’s not a site for zooming around; it’s for appreciating the intricate details.
Safety Notes
Cold water this month (avg 11°C). Drysuit or thick wetsuit (7mm+) recommended.
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Conditions
Ocean conditions, forecast and tides for Joan Rock
Joan Rock Ocean Conditions
Monthly averages for Joan Rock, 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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