Towers is a marine dive site located off Santa Cruz Island in the Channel Islands National Park. The topography features a combination of reef, kelp forest, wall, and pinnacle structures. Divers can expect depths ranging from 12 to 30 metres, with an average depth of 21 metres. Access to this site is by boat only, as it is situated 2000 metres from the shore. Conditions vary, with visibility ranging from 3 to 24 metres and moderate currents present. Due to the depth, potential for entanglement, and current, this site is suited for intermediate divers. Air fills and guided tours are available for those planning a visit.

The Towers is a marine dive site located 5000 metres off Santa Cruz Island within Channel Islands National Park. This site features a combination of reef, cave, and cavern topography. Divers can expect depths ranging from 18 to 23 metres, with an average depth of 15 metres. Access to the site is by boat only. Conditions include mild currents, though strong currents can occur, and visibility typically ranges between 10 and 30 metres. Water temperatures fluctuate between 13C and 17C throughout the year. The site is suitable for beginners and is supported by local dive shops offering guided tours and boat charters.

Blue Banks is a reef and kelp forest site located off Santa Cruz Island within the Channel Islands National Park. The site is accessed exclusively by boat. Divers should be prepared for moderate currents and surge, as well as potential boat traffic in the area. Conditions vary, with water temperatures ranging from 14C to 20C throughout the year. Given the environmental factors, this site is suited for intermediate divers. The topography consists of a shallow reef structure at a depth of approximately 4 metres.

Pelican Bay on Santa Cruz Island features a rocky reef and kelp forest habitat. Divers and snorkellers can explore depths ranging from 11 to 21 metres. Access is strictly by boat, as the site is located over 30 kilometres from the shore. Conditions typically include mild currents and visibility between 5 and 10 metres. Marine life recorded at the site includes horn sharks, garibaldi, flamingo tongue, ochre sea stars, brittle stars, sea stars, snails, striped shore crabs, and sea cucumbers. Water temperatures fluctuate between 13 and 17 degrees Celsius throughout the year. Hazards to be aware of include boat traffic, surf, sea urchins, and the depth of the site.

Punta Arena, located off Santa Cruz Island, features a combination of reef structures and kelp forests. Divers typically explore depths between 14 and 18 metres, with an average depth of 15 metres. The site is accessible by boat and offers mild currents, though surge and swell conditions are common. Visibility ranges from 10 to 30 metres. Water temperatures fluctuate between 13 and 16 degrees Celsius, requiring appropriate thermal protection such as a 7mm wetsuit or drysuit. The site is suitable for beginners and supports night diving. Divers should remain vigilant for boat traffic when surfacing and monitor their ascent closely.

Gull Island, located off Santa Cruz Island, offers a diverse underwater environment featuring reef, wall, kelp forest, and artificial reef structures. Divers can explore depths ranging from 6 to 33 metres, with an average depth of 18 metres. Visibility varies significantly from 6 to 30 metres. The site is accessible only by boat and is suited for intermediate divers due to potential surge, swell, and cold water temperatures between 12 and 16 degrees Celsius. Species recorded around this area include scorpionfish, flatworms, sea hares, sea stars, ochre sea stars, tube worms, abalone, snails, and striped shore crabs. Divers should monitor for boat traffic and use a surface marker buoy.

Morse Point is a boat-access reef and kelp forest site located off Santa Cruz Island. Divers navigate depths ranging from 11 to 23 metres, with an average depth of 17 metres. Visibility at the site typically spans 10 to 30 metres, providing clear views of the reef structure and kelp canopy. Conditions feature mild currents, though surge and swell are common hazards that require careful buoyancy control. Due to water temperatures between 13 and 16 degrees Celsius, a 7mm wetsuit or drysuit is recommended. This site is suited for intermediate divers, with typical dives lasting around 50 minutes. Access is strictly by boat.

Kinton Point, located off Santa Cruz Island, is a reef and kelp forest site suited for intermediate divers. The site features depths ranging from 15 to 30 metres with visibility typically between 10 and 20 metres. A kelp canopy filters light through the water column, creating a structured environment. Divers should expect mild currents, though surface surge and swell are common hazards that require careful monitoring during boat entry and exit. Water temperatures are cool, ranging from 13 to 16 degrees Celsius throughout the year, necessitating appropriate thermal protection. Boat access is required to reach this location, and divers must be self-sufficient regarding equipment and air fills.