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Joan Rock
Sidney, British Columbia, Canada
EntryBoat
Max depth18 m
LevelIntermediate and up
Water bodySalish Sea
Water temp8–14°C
Estimated from climate dataMay–Sep
About this site
Joan Rock is a reef dive site near Sidney, British Columbia, Canada, in the Salish Sea. It is reached from a boat with a maximum depth of about 18 m. Best for divers with some experience. Marine life recorded within about 5 km (OBIS/GBIF) includes seals, harbor seals, nudibranchs, dolphins, octopus. Typical surface water temperature ranges from about 8 to 14 °C over the year.
Conditions by month
BestGoodMixedOctoberGood
Generally good diving.
Marine life
Recorded nearby
Spiny DogfishSqualus suckleyi
Harbor SealPhoca vitulina
Walleye PollockGadus chalcogrammus
Pacific HerringClupea pallasii
Killer WhaleOrcinus orca- Rex SoleGlyptocephalus zachirus
English SoleParophrys vetulus
Snake PricklebackLumpenus sagitta
Nearby sites
- 1Imrie Island1.3 km
- 2Reay Island1.7 km
- 3Arachne Reef1.8 km
- 4Graham`s Wall2.3 km
- 5Rubly Island2.8 km
- 6G.B. Church3.1 km
Straight-line distances.
Sources: Dive Vibe Community (ODbL) · Species occurrences: OBIS (CC BY 4.0), GBIF.org