Bishop Rock is a reef and kelp forest site located off the Pacific Coast in LA County. Accessible only by boat, the site features depths ranging from 14 to 30 metres. Divers can expect visibility between 10 and 20 metres, with water temperatures typically between 14 and 17 degrees Celsius. While mild currents are common, the site is subject to surge and swell, which can increase the difficulty of the dive. Due to these conditions and the presence of kelp, intermediate skill levels are recommended. Divers should monitor local swell and current reports closely before departure, as conditions can change significantly.

Nine Fathom Bank is a deep reef and pinnacle site located 160 kilometres off the coast of the United States near LA County. The site features depths ranging from 23 to 35 metres, with an average depth of 28 metres. Due to the significant depth and strong currents, this site is suited for intermediate divers with solid buoyancy control. Visibility varies between 10 and 30 metres, and water temperatures remain cold, ranging from 13 to 17 degrees Celsius. Access is by boat only, and divers must be prepared for deep water, strong currents, and shark activity. A surface marker buoy is essential for all dives.

Tanner Bank is an offshore seamount located 56 kilometres from the coast of the United States. This advanced dive site features a complex topography of reef and pinnacle structures rising to a minimum depth of 22 metres, with the surrounding seafloor reaching 32 metres. The environment is characterised by strong, unpredictable currents and significant surge, requiring drift diving experience. Visibility is consistently high at 30 metres. Divers must access the site by boat and should remain vigilant regarding boat traffic during surface intervals. Due to upwelling and water temperatures ranging from 14 to 17 degrees Celsius, thermal protection such as a drysuit or thick wetsuit is recommended.