Henderson Point - Pacific Northwest
Henderson Point is a sleeper hit for us. It’s not flashy, but it’s reliably fascinating and we often find ourselves lingering longer than planned. The site drops off gently, making it really accessible for newer divers, though experienced eyes will pick out plenty of intrigue. We love the sheer variety of life here. You’ll weave through eelgrass beds, feeling the cool water shift around you, eyes peeled for those camouflaged Slender Sole flattened against the sandy bottom. Keep an eye out for Red Rock Crabs scuttling between rocks, and we've had some memorable encounters with giant octopuses tucked into crevices – always a thrill. Dive this during a slack tide, if you can. The currents here can push you around a bit, especially when the deeper water starts moving. You’ll want time to really slow down and appreciate the smaller stuff, like the delicate Star ascidians clinging to the rocks or the way the Pacific Glass Shrimp almost disappear against the silty bottom. This is a site for the patient observer, someone who enjoys finding the beauty in the subtle rather than the spectacular.
- Location
- Pacific Northwest, United States, North America
- Coordinates
- 48.597890, -123.480740
Marine Protected Area: Kellett Bluff Voluntary No-take
Best Time to Dive in Pacific Northwest
The warmest water temperatures in Pacific Northwest occur in August, averaging 16.5°C (up to 15.6°C). The coolest conditions are in February at 6.9°C.
Monthly Water Temperatures
- January: 7.1°C (air: 6.3°C)
- February: 6.9°C (air: 4.5°C)
- March: 7.7°C (air: 6.6°C)
- April: 9.5°C (air: 8.7°C)
- May: 12.0°C (air: 11.7°C)
- June: 14.0°C (air: 13.7°C)
- July: 15.7°C (air: 14.9°C)
- August: 16.5°C (air: 15.7°C)
- September: 14.3°C (air: 14.0°C)
- October: 11.4°C (air: 10.5°C)
- November: 8.8°C (air: 7.4°C)
- December: 7.7°C (air: 5.5°C)
Nearby Dive Sites in Pacific Northwest
- 100 Foot Rock
- Alki Beach Park
- Alki beach Seattle ferry north
- Am/Pm Beach - 13m (shore)
- Ansell Point Dive Site - 5-20m (shore)
- Arachne Reef - 5-20m (reef)
- Arachne Reef (reef)
- Arbutus Island - 10-30m (shore)
- Arbutus Point - 23m
- Atkins Reef (reef)
- Atrevida Reef (reef)
- Barnard Castle - 15-35m (pinnacle)
- Bell Island
- Blake Island Reef (reef)
- Blind Reef (reef)
Nearest Dive Centres to Henderson Point
Marine Life in Pacific Northwest
Home to 38 recorded species including 18 reef fish, 7 crabs & lobsters, 3 whales & dolphins, 2 sharks & rays, 2 clams & mussels, 2 sea urchins.
Notable Species
- Pacific herring (Clupea pallasii) - Reef Fish
- coho salmon (Oncorhynchus kisutch) - Reef Fish
- Spiny Dogfish (Squalus suckleyi) - Sharks & Rays
- Chinook (Oncorhynchus tshawytscha) - Reef Fish
- Dungeness Crab (Metacarcinus magister) - Crabs & Lobsters
- Common shore crab (Carcinus maenas) - Crabs & Lobsters
- red salmon (Oncorhynchus nerka) - Reef Fish
- California Spot Prawn (Pandalus platyceros) - Crabs & Lobsters
- Slender Crab (Metacarcinus gracilis) - Crabs & Lobsters
- Rainbow Trout (Oncorhynchus mykiss) - Reef Fish
- Whiting (Merluccius productus) - Reef Fish
- Pacific krill (Euphausia pacifica) - Crabs & Lobsters
- Common Seal (Phoca vitulina) - Whales & Dolphins
- Eulachon (Thaleichthys pacificus) - Reef Fish
- Red Rock Crab (Cancer productus) - Crabs & Lobsters
- Spotted Ratfish (Hydrolagus colliei)
- Calico salmon (Oncorhynchus keta) - Reef Fish
- Slender Sole (Lyopsetta exilis) - Reef Fish
- Pacific Geoduck (Panopea generosa) - Clams & Mussels
- Olympia oyster (Ostrea lurida) - Clams & Mussels
Recommended Packing List for Henderson Point
Based on average water temperature of 11.0°C, currents 7 cm/s.
- Wetsuit (5-7mm) - recommended for 11°C water
- Hood & Gloves (3-5mm) - helps retain warmth
- 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