Horse Pastures on Santa Catalina Island features a reef and kelp forest environment ranging from 5 to 20 metres in depth. The site is accessible from the shore, though divers should exercise caution regarding surf, shore break, surge, and swell conditions during entry and exit. Visibility typically fluctuates between 5 and 25 metres, and water temperatures vary from 15 to 20 degrees Celsius throughout the year. The site is suitable for beginner divers, though awareness of boat traffic and sharp rocks in the shallows is necessary. Facilities including parking, toilets, and showers are available for visitors.

Ace Wreck is an artificial reef and wreck site located off Santa Catalina Island. This advanced dive site sits at depths ranging from 29 to 35 metres, with an average depth of 32 metres. Access is strictly by boat due to its location approximately 8 kilometres from shore. Divers should be prepared for moderate currents and potential boat traffic in the area. Given the depth and environmental conditions, this site is intended for experienced divers only. The topography consists of a combination of reef and wreck structures.

Aliso is a versatile dive site located on the Pacific Coast of Orange County, featuring a combination of natural reef, kelp forest, and artificial reef structures. Divers can explore depths ranging from 5 to 15 metres, with an average depth of 11 metres. Conditions include moderate currents, surge, and visibility between 5 and 15 metres. Entry can be made from the shore or by boat, though the shore break requires careful timing between sets. Due to potential rip currents and surf, this site is best suited for intermediate divers. On-site facilities include parking, toilets, showers, and a cafe, making it a convenient location for a standard 45-minute dive.

Wood Cove on Santa Catalina Island features a shallow reef and kelp forest environment suitable for beginners. Divers and snorkellers can explore depths of 1 to 2 metres with visibility ranging from 10 to 30 metres. The site is accessed directly from the shore, though users should exercise caution regarding the shore break and potential rip currents. Marine life recorded here includes Spanish Shawl, Garibaldi, California Moray, and Leopard Shark, alongside various sea stars and invertebrates. Facilities at the site include parking, toilets, and showers. Due to the rocky entry and presence of sea urchins, protective footwear is recommended.

Laguna Beach on Santa Catalina Island features a diverse underwater landscape comprising a compact reef, kelp forest, and cave sections. Suitable for beginners, the site ranges from 5 to 15 metres in depth with an average of 8 metres. Divers can access the site via shore or boat, though shore entries require caution due to potential surf, surge, and rocky terrain. Visibility typically spans 5 to 10 metres, and mild currents are common. Water temperatures fluctuate between 15 and 19 degrees Celsius, necessitating adequate thermal protection. The site supports night diving and offers convenient on-site facilities including parking, showers, and air fills.

Bird Rock is a shallow reef and artificial reef site located 9 metres from shore at Santa Catalina Island. With depths ranging from 5 to 8 metres, it is suitable for beginner divers. Divers can access the site via shore or boat. Visibility typically ranges between 5 and 10 metres. The site is subject to moderate currents and significant surge, which can fluctuate quickly. Divers should monitor water conditions closely and maintain neutral buoyancy to navigate the reef structure safely. Due to the potential for strong water movement, timing entries for slack water is recommended to manage the surge and current effectively.

Rock Pile at Santa Catalina Island is a shore-entry reef and artificial reef site ranging from 2 to 15 metres in depth. Divers typically experience mild currents and visibility between 5 and 10 metres. The site is suitable for beginners, with an average depth of 10 metres allowing for dives of approximately 50 minutes. Entry requires caution due to surf and shore break; thick-soled footwear is recommended to protect against sharp rocks and sea urchins. Facilities available at the site include parking, toilets, showers, changing rooms, and a rinse station.

Monument Point is a shore-access reef dive located at Santa Catalina Island. The site features a shallow profile ranging from 7 to 9 metres, providing a practical environment for beginner divers. Divers can expect mild currents, though conditions are influenced by surge and swell. Visibility typically ranges between 5 and 10 metres. Access is via a shore entry that requires careful timing to navigate the active surf and shore break. On-site facilities include parking, toilets, showers, and changing rooms, allowing for a comfortable post-dive experience. The site is well-suited for those building confidence in reef terrain.