Hannah Rocks
Why dive here
With 58+ marine species recorded in the area - including blue sharks, blue whales, humpback whales, orcas and seals & sea lions - Hannah Rocks offers some of Alaska's richest pinnacle diving. Water ranges 5-15°C, warmest July, August, September.
Hannah Rocks gives you a real taste of Alaskan diving. It’s a rocky spot, with visibility often running around 10-15 meters, depending on the tide and recent weather. Down here, you're not looking for big pelagics, but for the smaller, more resilient creatures that thrive in these cooler waters. We’ve spotted spotted ratfish hugging the bottom and seen schools of slender sole flitting past. Look for unique invertebrates too, like the slender blade shrimp and sweet potato sea cucumbers. Surface intervals often bring views of marbled murrelets and pigeon guillemots diving for their own meals. It's a dive for those who appreciate the subtle beauty of a robust temperate ecosystem, less about flashy colours and more about sheer survival.
Typical Hannah Rocks Dive Profile
Illustrative profile based on site depth and type. Actual dive profiles vary - always follow your dive computer and training.
Safety Notes
Cold water this month (avg 11°C). Drysuit or thick wetsuit (7mm+) recommended.
Reviews for Hannah Rocks
Conditions
Ocean conditions, forecast and tides for Hannah Rocks
Hannah Rocks Ocean Conditions
Monthly averages for Hannah Rocks, sourced from Open-Meteo marine data - nearest station: Open-Meteo marine grid (57, -135.4) (0km away)
October Averages
Sea Temperature
11°C
51°F · Range: 8.5–12.8°C
Air Temperature
8°C
47°F
Wind Speed
6.44 m/s
12.5 knots
Atmospheric Pressure
1007.9 hPa
Based on 4 years of monitoring data · Data sources: Open-Meteo marine data
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