Italian Gardens is a reef and kelp forest site located 1500 metres off the coast of Avalon. The site features depths ranging from 6 to 30 metres, with an average depth of 15 metres. Visibility typically spans 10 to 25 metres, allowing for views through the kelp canopy. Divers should be prepared for moderate currents and thermoclines, with water temperatures between 14 and 18 degrees Celsius. Access is by boat only, which helps avoid surf and shore breaks. Beginners are advised to book a guided tour to navigate the shallower reef sections and manage current conditions. Always watch for boat traffic during ascent and surface under the vessel's flag.

Pirate's Cove in Avalon offers a combination of reef and kelp forest environments. The site is accessible by boat only and features depths ranging from 6 to 30 metres, with an average depth of 9 metres. Visibility typically spans 10 to 25 metres, and currents are generally mild. Due to water temperatures between 14 and 17 degrees Celsius, a full wetsuit is recommended. Divers should remain vigilant for boat traffic and potential entanglement in kelp. When navigating the reef, take care to avoid contact with sea urchins and jellyfish. The site is suitable for beginner divers, with a typical dive duration of 45 minutes.

Long Point features a reef and kelp forest system extending from the shallows to depths of 130 metres, with an average depth of 40 metres. Intermediate divers typically explore the 15 to 30 metre range. The site is accessible by boat or from the shore, though shore entries require caution due to constant surf and shore break. Visibility ranges from 10 to 30 metres, and water temperatures fluctuate between 11 and 16 degrees Celsius. Moderate currents are common, and divers must remain vigilant regarding heavy boat traffic in the area. Facilities available at the site include parking, toilets, showers, and a cafe.

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.

Hen Rock, located off the coast of Avalon, offers a classic California reef and kelp forest environment suitable for beginner divers. The site features depths ranging from 5 to 26 metres, with an average depth of 10 metres. Navigation is straightforward due to mild currents and visibility that typically spans 10 to 30 metres. Access to this site requires a boat. Divers should be aware of heavy boat traffic in the area and must use a surface marker buoy at all times, particularly when surfacing, to ensure visibility to vessel operators. Open Water certification is required to dive here.

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.

White Cove is a boat-access reef and kelp forest site located off Avalon, Santa Catalina Island. The site features a consistent depth of 20 metres, with visibility ranging from 5 to 30 metres. While currents are generally mild, divers must monitor for surge and swell conditions, which can develop rapidly. The kelp forest provides significant structure and shelter for marine life. Species recorded around this area include California sea lions, Garibaldi, horn sharks, California moray, and California spiny lobsters. Divers should arrange air fills and equipment hire before departing from the dock, as no facilities are available on site.

Moonstone Cove is a reef site located 800 metres offshore from Avalon, United States. The site features depths between 7 and 11 metres, with visibility typically ranging from 5 to 10 metres. Mild currents make this location suitable for beginner divers. Access is by boat only, and guided tours are available to assist with navigating the reef layout. Water temperatures fluctuate between 15 and 20 degrees Celsius throughout the year. Divers should remain vigilant regarding boat traffic while surfacing, and the use of a delayed surface marker buoy is recommended. Species recorded around this area include California sea lions, Garibaldi, Spanish shawls, horn sharks, and California spiny lobsters.