La Reina at Isla Cerralvo offers a diverse underwater topography consisting of reefs, walls, pinnacles, and canyons. This site is accessible only by boat and is suited for intermediate divers due to moderate currents and potential surge. Depths typically range between 10 and 25 metres, with an average depth of 12 metres. Visibility varies between 10 and 30 metres depending on conditions. Water temperatures fluctuate throughout the year, ranging from 20C in March to 27C in September and October. Guided tours and boat charters are available for those visiting the site.

Tlacote is a boat-access site located off Isla Cerralvo, featuring a combination of reef, pinnacle, and wall topography. The site sits at a depth of 5 to 10 metres, with visibility ranging from 10 to 30 metres. While currents are typically mild, the area is subject to surge and stronger current pushes, requiring divers to monitor conditions closely. Due to the potential for changing sea states, boat support is required. This site is suited for intermediate divers who can manage variable surge conditions. Water temperatures fluctuate between 21 and 30 degrees Celsius, with thermoclines possible during winter and spring months.

La Reinita is a small rock pinnacle located on the western side of Isla Cerralvo. This site features a reef structure that serves as a natural shelter. Divers and snorkellers can expect depths ranging from 9 to 30 metres, with an average depth of 15 metres. Access is by boat only, and the site is suited for intermediate skill levels due to mild currents and potential surge. Visibility typically fluctuates between 10 and 30 metres. The site supports a variety of marine life within its reef habitat. Typical dives last approximately 45 minutes, and the location is well-regarded for snorkelling.

Muertitos is a reef site located off Isla Cerralvo, featuring a profile that drops from 6 metres to a maximum depth of 25 metres, with an average depth of 18 metres. This site is accessible only by boat and is suited for intermediate divers due to moderate currents that can strengthen unexpectedly. Visibility is highly variable, ranging from 5 to 30 metres. Divers should remain aware of boat traffic when surfacing and maintain distance from sharp coral and rocks. Water temperatures fluctuate between 20 and 27 degrees Celsius throughout the year. Plan dives to work with the current and deploy a surface marker buoy before ascent.

The Salvatierra is a cargo ferry wreck located near Isla Espiritu Santo that sank in 1976 after striking Swanne Rock. Resting on a sandy bottom at a depth of 16 to 18 metres, the vessel remains approximately 70 percent intact. Divers can observe exposed propellers and remnants of the original cargo, including trucks with inflated tyres. The site is accessible only by boat and features mild currents with visibility ranging from 10 to 30 metres. Water temperatures fluctuate between 21C and 28C throughout the year. Hazards include boat traffic, potential entanglement within the structure, and sharp coral growth on the wreck.

Swanee Reef, located near Isla Partida off Isla Espiritu Santo, is a shallow reef structure ranging from 2 to 12 metres in depth. The site is accessible by boat and offers visibility between 10 and 30 metres. Conditions include moderate currents and potential surge, requiring divers to remain aware of their surroundings and active boat traffic in the area. The site is suitable for beginners and supports night diving. Water temperatures fluctuate seasonally between 21 and 29 degrees Celsius. Divers should stay close to their guide and maintain a surface marker buoy for the ascent due to the variable current and boat activity.

Punta El Mostrador is a rocky point located on the eastern side of Isla Cerralvo, facing the open Gulf. This site features dramatic drop-offs and a rugged topography suitable for advanced divers. Depths range from 8 to 30 metres, with visibility typically between 10 and 30 metres. Access is by boat only, and divers should be prepared for moderate currents. Hazards include jellyfish, sharks, and strong currents. Species recorded around this area include California sea lions, king angelfish, guineafowl puffer, wrasses, moorish idol, triggerfish, razor surgeonfish, pixy hawkfish, bluespotted cornetfish, goatfish, and convict surgeonfish. The site is also suitable for snorkelling with a rating of 3 out of 5.

The Salvatierra Ferry Wreck is an artificial reef site located near Isla Espiritu Santo. The ferry sank in 1975 after striking Swanne Reef and now rests at an average depth of 18 metres, with depths ranging between 18 and 20 metres. Access to the site is by boat only. Divers should be prepared for moderate currents and potential entanglement hazards within the wreckage. Visibility at the site typically ranges from 10 to 30 metres. Water temperatures fluctuate seasonally, reaching up to 28C in late summer and dropping to 21C during the winter months. This site is suited for intermediate divers.