Bird Rock, located 800 metres from the shore of Two Harbors, offers a diverse underwater environment featuring a reef, wall, and kelp forest. Divers can explore depths ranging from 5 to 30 metres, with an average depth of 18 metres. The site is accessible only by boat and is suited for intermediate divers. Marine life frequently encountered includes California sea lions, Garibaldi, and Kelp bass. Less common sightings include Leopard sharks, California moray, Eagle rays, Horn sharks, California spiny lobster, and various nudibranchs. Visibility typically ranges from 10 to 30 metres. Divers should be aware of potential hazards including boat traffic, surge, and strong currents.

Fishermans Cove in Two Harbors offers a varied underwater environment featuring reef and kelp forest topography. Located 50 metres from shore, the site is accessible by both boat and shore entry, making it suitable for beginners. Divers can expect depths ranging from 6 to 21 metres, with an average depth of 12 metres. Visibility typically spans 9 to 24 metres. Water temperatures range from 15C to 18C, with potential thermoclines occurring between 18 and 24 metres. Divers should remain aware of boat traffic, potential entanglement in kelp, and surf conditions. Facilities including parking, toilets, showers, and equipment rental are available nearby.

Cherry Cove is a reef and kelp forest site located off the coast of Two Harbors. The site features depths ranging from 6 to 27 metres, with an average depth of 20 metres. Visibility typically spans 10 to 20 metres, allowing for clear views of the kelp canopy and reef structure. Conditions are generally mild, making this a suitable location for beginner divers. Access is by boat only, and divers must remain vigilant regarding boat traffic in the area. A dive flag and surface marker buoy are essential for safety during ascents. Air fills, dive shops, and guided tours are available through local boat charter operators.

Lions Head is a marine reef and kelp forest site located near Two Harbors on Santa Catalina Island. Divers can explore depths ranging from 6 to 30 metres, with visibility typically between 10 and 20 metres. The site is suitable for beginners and features mild currents, though divers should remain aware of surge and boat traffic. Marine life frequently recorded here includes common Kelp Bass and various snails, alongside uncommon sightings of California Sea Lions, Horn Sharks, Spanish Shawl nudibranchs, Garibaldi, California Moray eels, and California Spiny Lobsters. Other species present include Scorpionfish, Atlantic Pyrosomes, Klipfish, Grunts, Sea Stars, and Copper Rockfish. Access to this site requires a boat.

Located near Two Harbors, this site features a mix of reef, kelp forest, and artificial reef topography. Divers access the area by boat, with sites typically located 1000 metres from shore. Depths range from 5 to 7 metres, with an average of 10 metres. Conditions are variable, with visibility ranging from 6 to 24 metres and water temperatures between 15C and 20C. Due to thermoclines, temperatures can drop significantly in deeper water, making a 7mm wetsuit or drysuit advisable. Hazards include cold water, depth, entanglement, low visibility, and surge. Facilities available in the area include air fills, equipment rental, and guided tours.

Blue Cavern in Two Harbors offers a complex underwater environment featuring a mix of reef, wall, wreck, and cave topography. The site ranges from 10 to 40 metres in depth, with an average of 18 metres. Divers experience visibility between 20 and 30 metres, though conditions are challenging due to strong currents and potential entanglement risks within the cave sections. Access is by boat only. Given the water temperatures of 13 to 16 degrees Celsius, a drysuit or thick wetsuit is recommended. Divers must remain vigilant regarding heavy boat traffic and maintain strict buoyancy control throughout the dive.

Ship Rock near Two Harbors is a complex site featuring a reef, pinnacle, and wreck set within a kelp forest. Divers encounter depths ranging from 5 to 50 metres, with an average of 25 metres. Conditions are variable, with visibility between 3 and 30 metres and strong currents that require careful planning. Water temperatures remain cool, between 14 and 17 degrees Celsius, making thermal protection essential. Due to the depth, current, and potential for low visibility, this site is suited for intermediate divers. Boat access is required, and divers must remain vigilant for boat traffic at the surface. Night diving is permitted for those experienced with these conditions.

Little Geiger is a reef and kelp forest site located near Two Harbors on Santa Catalina Island. The site features an average depth of 10 metres and is suitable for beginner divers. Access is exclusively by boat. Divers can expect mild currents and visibility ranging from 9 to 30 metres. Water temperatures fluctuate between 15C and 20C throughout the year. Typical dives at this location last approximately 45 minutes. Please be aware of sharp coral present in the area.