Willow Cove is a shallow reef and kelp forest site located near Avalon, Santa Catalina Island. The site features depths ranging from 5 to 10 metres, providing a comfortable environment for beginners and those looking to build confidence in the ocean. A boat is required to reach this location, which is situated 4815 metres from the shore. Divers and snorkellers can expect mild currents, though visibility varies significantly depending on conditions. The site is accessible year-round, with water temperatures fluctuating between 15C and 20C throughout the year. It is recommended to check local visibility and boat charter availability before planning a trip.

Frog Rock is a reef and kelp forest site located 4000 metres off the coast of Avalon. This site is suitable for beginners and maintains a consistent depth of 13 metres. Divers and snorkellers can expect mild currents and visibility ranging from 5 to 10 metres. Water temperatures fluctuate between 15 and 21 degrees Celsius throughout the year, making a wetsuit advisable. Access to this site requires a boat. The topography features a kelp canopy above a reef structure, providing a manageable environment for those looking to explore the local marine habitat.

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.

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.

The Valiant Wreck is a 75-foot luxury yacht that sank in 1930. Resting in Avalon, the site features depths ranging from 27 to 30 metres, with the shallow side at 27 metres and the deeper side at 30 metres. This wreck dive is suited for intermediate divers due to the overhead environment and potential boat traffic. Divers can access the site by boat or shore, though an Avalon Harbor Permit is required prior to diving. Conditions typically include mild currents and visibility between 10 and 20 metres. Water temperatures fluctuate between 14C and 18C throughout the year.

Casino Point Dive Park in Avalon is a protected marine area featuring a diverse underwater landscape of reefs, kelp forests, and artificial structures. Divers can explore depths ranging from 4 to 32 metres, with a thermocline typically present at 40 feet. The site is accessible via a shore entry and is suitable for beginners, though divers should be aware of mild currents and occasional surge. Visibility generally fluctuates between 10 and 30 metres. Facilities at the park include toilets, showers, rinse stations, and equipment rental services. Night diving is permitted, and the site is well-supported by local dive shops offering air fills and guided tours.

The Suejac Wreck is a shore-accessible artificial reef located off Avalon, United States. The structure sits at depths ranging from 18 to 27 metres, with an average depth of 23 metres. Divers experience visibility between 10 and 30 metres and mild currents. Due to the depth and overhead environment, this site requires careful monitoring of bottom time and decompression limits. Divers should be aware of potential entanglement risks and boat traffic near the entry point. A wetsuit of at least 5mm is recommended to manage water temperatures that fluctuate between 14 and 19 degrees Celsius throughout the year.

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.