Johnstone Reef is a marine reef site located off Vancouver Island, British Columbia. Divers can explore this area at depths ranging from 7 to 12 metres. The site is accessible via both shore and boat entries, though divers should be prepared for moderate currents and visibility between 5 and 10 metres. Water temperatures remain cold, consistently between 8 and 10 degrees Celsius, making dry suits essential for comfort. Hazards include boat traffic and cold water conditions. Divers should deploy a surface marker buoy before ascending to ensure visibility to passing vessels. The site is suitable for beginners, with typical dives lasting approximately 45 minutes.

Fulford Reef, located off the coast of Victoria, Canada, features a combination of kelp forest and reef topography. The site ranges from 5 to 30 metres in depth, with an average depth of 18 metres. Divers should be prepared for cold water temperatures between 8 and 9 degrees Celsius, necessitating appropriate thermal protection. Visibility typically spans 10 to 20 metres. Access is strictly by boat, and divers must manage surge and swell conditions, which can impact the shallower kelp sections and ascent. The site is suited for intermediate divers, with typical dive times around 45 minutes.

Telegraph Cove in Victoria, Canada, offers a diverse underwater environment featuring reefs, walls, and kelp forests. Divers can expect depths between 6 and 20 metres, with an average of 12 metres. Visibility varies from 5 to 15 metres, and moderate currents require careful planning around slack water. The site is accessible by both shore and boat. Marine life includes common sightings of crabs and orange sea cucumbers, alongside uncommon species such as Monterey Dorid, Nanaimo Dorid, White-lined Dirona, Three-lined Aeolid, Northern Leopard Dorid, Egg-yolk Jellyfish, Northern Kelp Crab, Mottled Star, and Leather Star. Rare encounters include King Crab, Clown Dorid, and Branched Dendronotid. A drysuit is recommended due to the consistent 8 to 9 degree Celsius water temperature.

Harney Toe is an artificial reef located in Puget Sound, United States. This shallow site sits at an average depth of 4 metres, with a range of 3 to 5 metres. Access is by boat only. Divers should prepare for cold water temperatures between 8 and 14 degrees Celsius and variable visibility ranging from 5 to 10 metres. Due to the artificial structure, divers must remain aware of entanglement risks and maintain careful buoyancy control. The site is suitable for intermediate divers who should use a torch to inspect the reef structure. A thick exposure suit is recommended to manage the cold conditions.

Ten Mile Point offers a varied underwater landscape featuring reef, wall, and kelp forest topography. Located off Victoria, Canada, this site is suited for advanced divers due to strong currents that require careful planning around slack water. Depths typically range from 10 to 20 metres with visibility between 5 and 10 metres. Water temperatures remain consistently between 8 and 9 degrees Celsius, necessitating a drysuit and hood. Divers may encounter various nudibranchs including the White-lined Dirona, Monterey Dorid, and Nanaimo Dorid, alongside Orange Sea Cucumbers and crabs. Rare sightings include California Sea Lions, Harbor Seals, and the Lion Nudibranch. Shore and boat entries are both available for this site.

Spring Bay is a shore-entry reef and kelp forest site in Victoria, Canada. Suitable for beginners, the site features depths ranging from 3 to 15 metres with an average of 8 metres. Divers can expect mild currents and visibility between 10 and 20 metres. The topography consists of reef structures and kelp forests, though divers should remain cautious of surge and sharp rocks. Marine life recorded here includes common orange sea cucumbers and various crab species. Rarer sightings include California sea lions, harbour seals, and a variety of nudibranchs such as the Monterey and Nanaimo dorids. Parking is available at the site to facilitate gear preparation.

Brinn Rock is a shallow reef site located off the coast of Victoria, Canada. The site features a reef structure at depths between 5 and 9 metres, making it suitable for beginner divers. Visibility typically ranges from 5 to 10 metres. Access to this site is by boat only. Due to the cold water temperatures, which remain between 8 and 10 degrees Celsius throughout the year, divers must wear a drysuit or a 7mm wetsuit with a hood and gloves. Divers should remain alert for boat traffic, maintain a dive flag, and be aware of potential rip currents and jellyfish.

Discovery Island offers a diverse underwater experience combining a wall, reef, and kelp forest. Divers can explore depths ranging from the surface down to 30 metres. The site is accessible only by boat, and intermediate divers should be prepared for moderate currents and surge. Visibility typically ranges between 10 and 20 metres. Water temperatures are consistently cold at 8 to 9 degrees Celsius, necessitating appropriate thermal protection such as a drysuit. Divers should time their entry around slack water to manage currents and monitor their depth carefully to mitigate risks associated with decompression and nitrogen narcosis.