Cape Cortes, located off Two Harbors, features a combination of reef and kelp forest environments. Divers typically explore depths between 20 and 25 metres, with visibility ranging from 10 to 24 metres. The site is accessible by boat only and experiences mild currents. Due to water temperatures between 15 and 18 degrees Celsius and the presence of thermoclines, a 7mm wetsuit or drysuit is recommended. Divers should monitor depth and bottom time to manage risks associated with nitrogen narcosis and decompression. Surface boat traffic requires caution during ascents, and care should be taken to avoid entanglement within the kelp forest.

Lobster Bay, located off the coast of Two Harbors, features a combination of reef structure and kelp forest. Divers can explore depths ranging from 17 to 30 metres with visibility typically between 10 and 20 metres. Access to this site is by boat only. Conditions include mild currents, though surge and swell are common hazards that require careful monitoring of positioning near the reef. Water temperatures fluctuate between 14 and 18 degrees Celsius throughout the year, necessitating appropriate thermal protection. This site is suited for intermediate divers, and Open Water certification is the minimum requirement for entry.

Ribbon Rock is a boat-access reef located off the coast of Two Harbors. The site features a reef structure at depths ranging from 15 to 20 metres. Divers should expect moderate currents, which can occasionally strengthen, requiring careful buoyancy control and drift awareness. Visibility typically ranges between 5 and 10 metres. Water temperatures are cool, fluctuating between 14C and 18C throughout the year, making a thick wetsuit or drysuit necessary. While listed as suitable for beginners, the depth and potential for current mean divers should be confident in their open water skills. Reliable boat support is required, and a surface marker buoy is recommended for the ascent.

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.

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.

Eel Cove, located off the coast of Two Harbors, features a combination of reef topography and kelp forest. Divers can explore depths ranging from 9 to 30 metres, with an average depth of 10 metres. The site is accessible only by boat and is suited for intermediate divers. Visibility typically ranges between 10 and 20 metres, allowing for navigation through the kelp columns. Currents are generally mild. Water temperatures remain cool throughout the year, fluctuating between 15 and 18 degrees Celsius, necessitating appropriate thermal protection such as a 5mm wetsuit or semi-dry suit for the typical 45-minute dive duration.

Iron Bound Cove, located off Two Harbors, features a reef and kelp forest environment at depths ranging from 21 to 30 metres. With an average depth of 25 metres, this site is suited for intermediate divers. Visibility typically spans 10 to 20 metres, allowing for observation of the kelp canopy and reef structure. Divers must access the site by boat, remaining aware of mild currents and potential surge. Due to the kelp forest, entanglement is a primary hazard, and divers should be prepared for overhead environments. Water temperatures range from 14C to 18C, necessitating appropriate thermal protection. Always maintain a lookout for boat traffic when surfacing.

Little Geiger is a reef and kelp forest site located near Two Harbors on Santa Catalina Island. The site features an average depth of 10 metres and is suitable for beginner divers. Access is exclusively by boat. Divers can expect mild currents and visibility ranging from 9 to 30 metres. Water temperatures fluctuate between 15C and 20C throughout the year. Typical dives at this location last approximately 45 minutes. Please be aware of sharp coral present in the area.