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.

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.

Located off Avalon, Catalina Island, this site features a combination of reef, kelp forest, and wall topography. Divers typically explore depths between 9 and 30 metres, with an average depth of 12 metres. Access is by boat only, as the site is situated 8 kilometres from shore. Conditions include strong currents and visibility ranging from 12 to 18 metres. Water temperatures fluctuate between 14 and 18 degrees Celsius, with potential thermoclines in deeper sections. Hazards include cold water, entanglement risks, strong currents, and surf. Species recorded around this area include California sea lions, Garibaldi, horn sharks, Spanish shawl nudibranchs, California moray eels, and California spiny lobsters.

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.

Paradise Cove in Two Harbors features a deep reef and kelp forest structure ranging from 16 to 37 metres. This boat-only site is suited for intermediate divers who possess strong buoyancy control and navigation skills. Visibility typically ranges between 5 and 10 metres, often affected by thermoclines. Divers should be prepared for mild to strong currents and potential entanglement risks within the kelp. Due to the significant depth and variable conditions, a drysuit or thick wetsuit is recommended. Species recorded around this area include California sea lions, Garibaldi, horn sharks, Spanish shawls, California moray, and California spiny lobster.

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.

Casino Point in Avalon is a shore-accessible dive site featuring a kelp forest and reef environment. Divers typically experience depths averaging 8 metres, with a maximum depth of approximately 8.5 metres. The site offers visibility ranging from 12 to 30 metres and mild currents, making it suitable for beginners. Dives here generally last around 50 minutes. Water temperatures fluctuate between 15C and 20C throughout the year. Facilities available at the location include air fills, equipment rental, and guided tours. Divers should remain aware of boat traffic in the area.

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.