Indian Rock, located off the West End of Santa Catalina Island near Two Harbors, features a central rock formation surrounded by shallow reefs and kelp forests. The site is suitable for beginners, with depths ranging from 5 to 45 metres and an average depth of 10 metres. Snorkellers can observe common Garibaldi, as well as less frequently encountered species including Leopard Shark, California Moray, Spanish Shawl, Horn Shark, Harbor Seal, and Guitarfish. California Spiny Lobster and various wrasses are also present. Entry is possible by both shore and boat. Visibility varies between 5 and 25 metres, and currents are generally mild. Be aware of boat traffic in the area.

Johnson's Rocks is a pinnacle and kelp forest site located 228 metres off the coast of Two Harbors. The topography features a mix of reef and pinnacle structures, with depths ranging from 30 to 90 metres. Due to strong currents and potential entanglement risks within the kelp, this site is suited for intermediate to advanced divers. Visibility typically spans 9 to 20 metres. Access is by boat only, and divers should exercise caution regarding surf conditions at the entry point. Given the water temperatures of 13 to 16 degrees Celsius, a drysuit or thick wetsuit is recommended for comfort during the typical 45-minute dive.

Doctors Cove in Two Harbors offers a diverse underwater environment featuring a mix of reef, wreck, and kelp forest. This site is accessible only by boat and is well-suited for beginners due to its mild currents and manageable depths, which range from 10 to 20 metres with an average of 15 metres. Visibility typically spans 10 to 20 metres. Divers should be prepared for water temperatures between 14 and 18 degrees Celsius, making a 5mm wetsuit, hood, and gloves advisable. When navigating the site, be aware of local surge and swell conditions, and take care around sharp coral and rocks.

Pebbly Beach in Two Harbors provides a versatile shore entry suitable for beginner divers. The site features a combination of reef, wreck, and kelp forest topography. Divers can expect mild currents and visibility ranging from 10 to 30 metres. Water temperatures fluctuate between 15 and 21 degrees Celsius throughout the year, necessitating appropriate thermal protection. Due to the location being an active area, boat traffic is a significant hazard. Divers should remain vigilant during entries and exits and use a safety sausage upon surfacing to maintain visibility to passing vessels.

Big Geiger Cove, located off the coast of Two Harbors, offers a diverse underwater environment featuring reef, kelp forest, and seagrass beds. The site ranges in depth from 4 to 30 metres, with an average depth of 10 metres. Access is strictly by boat, and divers should be prepared for mild currents and potential surge. Visibility typically spans 10 to 25 metres, though conditions vary with swell. Water temperatures range from 14 to 18 degrees Celsius, necessitating appropriate thermal protection. Due to active boat traffic in the area, divers must deploy a surface marker buoy at all times and monitor local conditions before descent.

Arrow Point is a reef and kelp forest site located off the coast of Two Harbors. Accessible only by boat, the site features depths ranging from 8 to 40 metres, with an average depth of 15 metres. Visibility typically spans 10 to 30 metres. The site is characterised by strong currents that can shift quickly, requiring divers to remain close to the boat entry point and monitor conditions throughout the dive. While suitable for beginners, those with less experience should exercise caution, dive with a guide or experienced buddy, and remain in the shallower sections of the reef to avoid the deeper range.

Little Geiger Cove, located near Two Harbors, offers a reef dive suitable for beginners. The site features a depth range of 6 to 28 metres, allowing newer divers to explore the shallower sections comfortably. Access is by boat, and the site is characterised by mild currents. Visibility typically ranges from 5 to 10 metres. Water temperatures are cool, fluctuating between 14 and 18 degrees Celsius throughout the year, so a wetsuit of at least 5mm, along with a hood and gloves, is recommended. Check locally before departure for current facility availability and access updates.

Eagle Reef, located 550 metres from the shore of Two Harbors, is a marine site featuring a combination of reef and kelp forest topography. Divers typically encounter moderate currents at this location, which requires boat access. Depths range from 3 to 30 metres, with an average depth of 15 metres. Visibility varies significantly, ranging between 5 and 25 metres. Water temperatures fluctuate between 15C and 18C throughout the year. Due to the presence of moderate currents and potential boat traffic, this site is best suited for intermediate divers. Typical dives at this location last approximately 40 minutes.