Old Cow Reef - Nova Scotia
Old Cow Reef, off the coast of Nova Scotia, is a solid cold-water dive. Don't expect tropical colours here, but what you will find is a rugged, characterful reef system, well-suited to divers who appreciate the unique beauty of North Atlantic ecosystems. We've often spotted American lobsters tucked into crevices, alongside sculpin and the occasional lumpsucker clinging to the rocks. Keep an eye out for curious common seals, who sometimes make close passes, especially in the shallower sections. It’s a great spot for an immersive, temperate water experience, particularly if you’re keen on seeing the marine life that thrives in these cooler currents.
- Location
- Nova Scotia, Canada, North America
- Coordinates
- 43.643240, -65.220400
- Type
- reef
Marine Protected Area: Blanche Beach Conservation Lands
Best Time to Dive in Nova Scotia
The warmest water temperatures in Nova Scotia occur in August, averaging 17.1°C. The coolest conditions are in March at 1.3°C.
Monthly Water Temperatures
- January: 3.3°C
- February: 1.6°C
- March: 1.3°C
- April: 3.0°C
- May: 6.6°C
- June: 11.0°C
- July: 15.9°C
- August: 17.1°C
- September: 16.0°C
- October: 13.9°C
- November: 10.4°C
- December: 6.5°C
Nearby Dive Sites in Nova Scotia
- Africville Park
- Anemones Alley
- Arctic Trader shipwreck (wreck)
- Avondale Reef (reef)
- BALEINE - 18m (wreck)
- Bayswater
- Big Duck Island
- Birchy Head
- Black Reef (reef)
- Black Rock Beach
- Blueberry Bay Reef (reef)
- Boutiliers Point
- Boyds Reef (reef)
- Broad Bank (reef)
- Bull Reef (reef)
Nearest Dive Centres to Old Cow Reef
Marine Life in Nova Scotia
Home to 80 recorded species including 48 reef fish, 9 sharks & rays, 5 crabs & lobsters, 5 whales & dolphins, 4 other, 2 starfish.
Notable Species
- American Lobster (Homarus americanus) - Crabs & Lobsters
- Striped Bass (Morone saxatilis) - Reef Fish
- Whiting (Merluccius bilinearis) - Reef Fish
- Split (Scomber scombrus) - Reef Fish
- Blue Shark (Prionace glauca) - Sharks & Rays
- Cape Shark (Squalus acanthias) - Sharks & Rays
- saithe (Pollachius virens) - Reef Fish
- American eel (Anguilla rostrata) - Reef Fish
- Protestant (Clupea harengus) - Reef Fish
- Atlantic cod (Gadus morhua) - Reef Fish
- Haddock (Melanogrammus aeglefinus) - Reef Fish
- Alewife (Alosa pseudoharengus) - Reef Fish
- long rough dab (Hippoglossoides platessoides) - Reef Fish
- salmon (Salmo salar) - Reef Fish
- Acadian Whitefish (Coregonus huntsmani) - Reef Fish
- witch (Glyptocephalus cynoglossus) - Reef Fish
- porbeagle (Lamna nasus) - Sharks & Rays
- Starry Ray (Amblyraja radiata) - Sharks & Rays
- tusk (Brosme brosme) - Reef Fish
- Atlantic Tomcod (Microgadus tomcod) - Reef Fish
Recommended Packing List for Old Cow Reef
Based on average water temperature of 8.9°C, currents 2 cm/s.
- Drysuit - water at 9°C demands a drysuit with thermal undergarments
- Hood & Gloves (7mm+) - critical to prevent heat loss
- Mask - essential for every dive
- Fins
- BCD - buoyancy compensator
- Regulator - your most safety-critical piece of gear
- Dive Computer - tracks depth, time, and NDL
- Surface Marker Buoy (SMB) - essential for boat pickups
- Dive Torch - useful for crevices and colour at depth
- Underwater Camera - capture your diving memories