Eel Cove is a marine dive site located in Two Harbors, Santa Catalina Island. The site features a consistent depth of approximately 12 metres. Conditions at this location vary, with water temperatures ranging from 15C in the winter and spring months to 20C during the late summer and early autumn. As a marine environment, the site is accessible for diving activities. Divers should be prepared for variable conditions typical of the Santa Catalina Island region. The site has been documented in dive records dating back to 2012.

Rippers Cove is a marine dive site situated near Two Harbors on Santa Catalina Island. The site features a combination of reef and kelp forest topography. Divers can expect depths of approximately 21 metres. Visibility at this location typically ranges between 10 and 20 metres, with water temperatures fluctuating from 15C in the winter months to 19C during late summer. A typical dive at this location lasts around 45 minutes. Due to the depth and environment, this site is generally suited for divers with appropriate training and experience in kelp forest navigation.

Little Gibraltar is a reef and pinnacle site located off the coast of Two Harbors. The site features depths ranging from 11 to 25 metres, with an average depth of 20 metres. Divers can expect visibility between 10 and 30 metres. The area is subject to moderate currents, which require solid buoyancy control and careful navigation around the pinnacle structure. Access is strictly by boat. Due to the presence of boat traffic, divers should remain vigilant during ascents and are advised to use a surface marker buoy. This site is best suited for intermediate divers capable of managing current and surface awareness.

Yellowtail Point in Two Harbors is a boat-access site featuring a reef and kelp forest. Divers typically explore depths between 10 and 30 metres, with an average depth of 15 metres. Visibility generally ranges from 10 to 20 metres. The site is suitable for intermediate divers, though conditions require monitoring due to potential surge and swell. A mild current is common. Given the water temperatures of 14 to 17 degrees Celsius, appropriate thermal protection is recommended. Boat access is required, and divers should check local weather forecasts for swell activity before departure to ensure safe conditions for entry and navigation around the reef structure.

Rock Quarry near Two Harbors is a boat-accessible site featuring a combination of reef, artificial reef, and kelp forest habitats. The site reaches depths between 6 and 36 metres, with an average depth of 18 metres. Divers should be prepared for mild currents and potential boat traffic. Visibility typically ranges from 13 to 15 metres, and water temperatures fluctuate between 14 and 18 degrees Celsius throughout the year. Due to the depth and environmental conditions, this site is suited for intermediate divers. Species recorded around this area include California sea lions, Garibaldi, Spanish shawls, horn sharks, California morays, leopard sharks, eagle rays, lesser two-spot octopuses, guitarfish, scorpionfish, California spiny lobsters, Atlantic pyrosomes, wrasses, and egg-yolk jellyfish.

Goat Harbor is a boat-access reef and kelp forest site located off the coast of Two Harbors. The site features depths ranging from 10 to 37 metres, with an average depth of 15 metres. Divers encounter mild currents and visibility typically between 5 and 10 metres. The kelp forest provides significant structure throughout the area. Due to the potential for boat traffic, it is essential to deploy a surface marker buoy before ascending. The site is suitable for beginner divers, with a typical dive duration of 45 minutes. Water temperatures range from 14 to 17 degrees Celsius, making a 5mm wetsuit recommended.

Twin Rocks is a boat-access reef and kelp forest site located off the coast of Avalon. The site features a depth range of 15 to 25 metres, with an average depth of 20 metres. Visibility typically ranges from 9 to 12 metres, providing views of the kelp canopy and reef structure. Water temperatures fluctuate between 15 and 18 degrees Celsius throughout the year. Divers should be prepared for moderate currents, which can intensify at depth. As a beginner, it is recommended to plan dives around slack water and maintain close proximity to the boat entry point. Always monitor your depth carefully while exploring this reef environment.

Rock Quarry, located off the coast of Two Harbors, features a combination of reef structures and kelp forests. Divers can explore depths ranging from 8 to 30 metres with visibility typically between 10 and 20 metres. The site is suitable for beginners, though boat entry requires caution due to potential surf and shore break. Underwater, the kelp forest provides vertical structure for local marine life. Divers should maintain good buoyancy control to avoid contact with sharp rocks and sea urchins. Typical dive times are approximately 45 minutes, with mild currents generally expected throughout the area.