Ampitheater is a shallow marine dive site located at Anacapa Island within Channel Islands National Park. The site features an average depth of 6 metres, making it a shallow location suitable for divers. Access to this site is exclusively by boat. Water temperatures at this location fluctuate throughout the year, ranging from 14C in the cooler months of February and March to 19C during the peak of late summer in August and September. Due to the shallow nature of the topography, the site is well-suited for those seeking a relaxed, shallow-water experience in the Channel Islands.

Sea Lion Cove at Anacapa Island offers a shallow reef and kelp forest environment suitable for beginners. Divers typically explore depths ranging from 2 to 9 metres, with an average depth of 5 metres. Access to this site is by boat only, located 15 kilometres from the shore. Conditions vary, with visibility ranging from 5 to 15 metres and moderate currents. Water temperatures fluctuate between 14C and 19C, often necessitating a thick wetsuit or drysuit due to potential upwelling. Hazards at this site include boat traffic, cold water, entanglement risks, sea urchins, and surge.

Frenchy's Cove is a shallow, rocky reef located on the north side of the west islet of Anacapa Island. This site is primarily accessed by boat and offers snorkeling opportunities in depths ranging from 1 to 10 metres. Conditions are generally calm, though visitors should be aware of potential hazards including surf, strong currents, and entanglement. Visibility typically fluctuates between 10 and 25 metres. Due to the water temperatures, which range from 14C to 21C, a 7mm wetsuit or drysuit is recommended for comfort. Access to this area is seasonal to protect nesting birds, and the site is well-suited for beginners.

Inside Fish Camp is a shallow reef and kelp forest site located 100 metres off Anacapa Island. The site is suitable for beginners, with an average depth of 4 metres. Access is strictly by boat. Divers can expect mild currents and visibility ranging from 6 to 18 metres. Water temperatures fluctuate between 14C and 20C throughout the year. Due to the nature of the environment, divers should be prepared for surge and cold water conditions. Boat traffic is a potential hazard in the area. Typical dives at this location last approximately 40 minutes.

Pelican Rookery at Anacapa Island is a shallow reef and kelp forest site suitable for beginner divers. The site maintains an average depth of 5 metres. Access is exclusively by boat, and divers should be prepared for mild currents and surge. Visibility at this location typically ranges between 5 and 15 metres. Water temperatures fluctuate throughout the year, ranging from 14C in the winter and spring months to 20C during late summer and autumn. Hazards at this site include cold water, potential entanglement in kelp, surge, and the presence of sharks. Typical dives at this location last approximately 45 minutes.

Cathedral Cove at Anacapa Island is a shallow kelp forest and reef site accessible only by boat. Divers typically explore depths of 3 to 4 metres, making it suitable for beginners. The site is known for frequent encounters with California sea lions, which are very common. Other marine life recorded here includes Spanish shawl nudibranchs, horn sharks, garibaldi, and California spiny lobster. Conditions vary, with visibility ranging from 10 to 20 metres and mild currents. Divers should be aware of potential hazards including boat traffic, cold water, rip currents, surf, and surge. Water temperatures fluctuate between 14C and 20C throughout the year.

Inner Underwater Island is a reef and pinnacle site located off Anacapa Island. Divers typically experience depths around 7 metres, with dives lasting approximately 45 minutes. Access is by boat only, and the site is suited for intermediate divers due to moderate currents, surge, and variable visibility ranging from 6 to 24 metres. Marine life commonly observed includes Garibaldi, Spanish Shawl, Scorpionfish, sea stars, and sea hares. Divers may also encounter California Moray, Horn sharks, Hermissenda, Neptunazurea kempfi, California spiny lobster, brittle stars, tube worms, and abalone. Red gorgonians are also present on the reef structure.

Channels is a kelp forest and reef site located at Anacapa Island. Divers can expect shallow depths ranging from 3 to 9 metres, with an average depth of 6 metres. Access to this site is by boat only. Conditions are generally mild, though divers should be aware of potential surge. Visibility can reach up to 30 metres depending on conditions. Water temperatures fluctuate throughout the year, ranging from 14C in the winter and early spring to 19C in late summer and early autumn. This site is suitable for beginners.