Rippers Cove is a marine dive site situated near Two Harbors on Santa Catalina Island. The site features a combination of reef and kelp forest topography. Divers can expect depths of approximately 21 metres. Visibility at this location typically ranges between 10 and 20 metres, with water temperatures fluctuating from 15C in the winter months to 19C during late summer. A typical dive at this location lasts around 45 minutes. Due to the depth and environment, this site is generally suited for divers with appropriate training and experience in kelp forest navigation.

Eel Cove is a marine dive site located in Two Harbors, Santa Catalina Island. The site features a consistent depth of approximately 12 metres. Conditions at this location vary, with water temperatures ranging from 15C in the winter and spring months to 20C during the late summer and early autumn. As a marine environment, the site is accessible for diving activities. Divers should be prepared for variable conditions typical of the Santa Catalina Island region. The site has been documented in dive records dating back to 2012.

Rock Quarry, located off the coast of Two Harbors, features a combination of reef structures and kelp forests. Divers can explore depths ranging from 8 to 30 metres with visibility typically between 10 and 20 metres. The site is suitable for beginners, though boat entry requires caution due to potential surf and shore break. Underwater, the kelp forest provides vertical structure for local marine life. Divers should maintain good buoyancy control to avoid contact with sharp rocks and sea urchins. Typical dive times are approximately 45 minutes, with mild currents generally expected throughout the area.

Crane Point, located off the coast of Two Harbors, offers a diverse underwater environment featuring natural reef, kelp forest, and artificial reef structures. Divers typically explore depths between 10 and 15 metres, with an average depth of 12 metres. The site is suitable for beginners, though divers should remain mindful of potential surge and swell conditions during boat entry and exit. Visibility ranges from 10 to 30 metres, providing clear views of the layered kelp forest. Due to the presence of kelp, divers should keep their equipment streamlined to avoid entanglement. The site is accessible year-round and supports night diving, with mild currents generally prevailing.

Paradise Cove in Two Harbors features a deep reef and kelp forest structure ranging from 16 to 37 metres. This boat-only site is suited for intermediate divers who possess strong buoyancy control and navigation skills. Visibility typically ranges between 5 and 10 metres, often affected by thermoclines. Divers should be prepared for mild to strong currents and potential entanglement risks within the kelp. Due to the significant depth and variable conditions, a drysuit or thick wetsuit is recommended. Species recorded around this area include California sea lions, Garibaldi, horn sharks, Spanish shawls, California moray, and California spiny lobster.

Fraggle Rock is a diverse marine site near Two Harbors, Santa Catalina Island, featuring a combination of reef, kelp forest, and pinnacle topography. This site is accessible only by boat and is suitable for beginners, with depths ranging from 10 to 65 metres. Conditions are generally mild, though divers should be aware of potential surf. Visibility is excellent, typically spanning 25 to 80 metres. Species recorded around this area include California sea lions, Garibaldi, California moray, horn sharks, Spanish shawl nudibranchs, and California spiny lobsters. Water temperatures fluctuate between 12C and 17C throughout the year.

Sea Fan Grottos is a boat-access site located off Two Harbors, featuring a combination of caverns, reef structures, and kelp forests. Divers can explore depths ranging from 8 to 12 metres, with an average depth of 8 metres. Visibility at the site typically spans 9 to 23 metres. The area experiences moderate currents, and divers should remain cautious of surge and swell, particularly near the shallower reef sections. As the site includes cavern areas, it presents an overhead environment that requires careful navigation and buoyancy control. This site is suitable for beginners, though an open water certification is the minimum requirement for entry.

Blue Cavern in Two Harbors offers a complex underwater environment featuring a mix of reef, wall, wreck, and cave topography. The site ranges from 10 to 40 metres in depth, with an average of 18 metres. Divers experience visibility between 20 and 30 metres, though conditions are challenging due to strong currents and potential entanglement risks within the cave sections. Access is by boat only. Given the water temperatures of 13 to 16 degrees Celsius, a drysuit or thick wetsuit is recommended. Divers must remain vigilant regarding heavy boat traffic and maintain strict buoyancy control throughout the dive.