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.

La Reina Islet, located near Isla Cerralvo, offers a reef dive ranging from 5 to 27 metres with an average depth of 12 metres. The site is accessed by boat and is suitable for beginners, with typical dives lasting 45 minutes. Visibility varies between 10 and 30 metres, and divers should be prepared for moderate currents and potential thermoclines. Water temperatures fluctuate throughout the year, ranging from 20C to 27C. Hazards at this location include boat traffic, surge, and jellyfish. Facilities available in the area include boat charters, guided tours, air fills, and equipment rental.

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.

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.

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.

El Bajo, also known as Marisla, is a series of three underwater pinnacles located off Isla Espiritu Santo. This advanced dive site features a drop-off and reef topography with depths ranging from 16 to 40 metres, averaging 25 metres. Due to its location 12.8 kilometres from shore, boat access is required. Divers should be prepared for strong currents and potential thermoclines throughout the water column. Visibility typically fluctuates between 10 and 30 metres. Given the depth, strong currents, and presence of sharks, this site is strictly for advanced divers. Typical dive times are approximately 60 minutes.

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.

Los Viejitos is a reef and pinnacle site situated off Isla Cerralvo, designed for intermediate divers capable of managing strong currents. The topography consists of reef and rock formations reaching depths between 9 and 18 metres, with an average depth of 12 metres. Visibility typically ranges from 5 to 10 metres. Divers should be prepared for thermoclines during descent and must exercise caution around sharp coral and rock surfaces. Due to the strong currents, boat access is required, and tide timing is critical for a successful dive. Hazards include the presence of jellyfish and sharks, requiring constant situational awareness throughout the 45-minute dive duration.