Ensenada Grande at Isla Espiritu Santo features a combination of shallow beach areas and steep volcanic cliffs that descend into reef systems. This site is suitable for beginners, with depths starting at 2 metres and extending deeper along the wall. Snorkellers can access the site via both shore and boat entries. Conditions are generally mild, though visitors should remain aware of boat traffic in the area. The water temperature fluctuates throughout the year, ranging from 21C in the winter months to 29C during the summer. The site offers a varied topography of rocky walls and reef structures for exploration.

Las Cuevitas, located at Isla Espiritu Santo, is a marine site defined by a series of small caves and dark volcanic cliffs. This site is suitable for intermediate snorkellers and requires boat access. Conditions are variable, with visibility typically ranging between 20 and 30 metres and mild currents. The topography includes an overhead environment within the caves, which requires caution. Hazards include surge, sea urchins, and boat traffic. Water temperatures fluctuate throughout the year, ranging from 21C in winter months to 29C in late summer. The cliffs serve as a nesting site for Blue-footed Boobies, which can be observed diving into the water.

Ensenada de la Raza is a multi-lobed bay located on the west side of Isla Espiritu Santo. The site features a mix of sand and rocky reef topography, with rocky points separating the lobes. Depths range from 2 to 10 metres, making it suitable for beginners. Access is by boat, and the site experiences mild currents that can influence water temperatures, which fluctuate between 21C and 29C throughout the year. Divers and snorkellers should be aware of potential hazards including boat traffic, sea urchins, sharks, and sharp coral. Guided tours and boat charters are available for those visiting this area.

La Tintorera is a reef site located at Isla Espiritu Santo, Mexico. Accessible only by boat, the site features an average depth of 8 metres, with a maximum depth range of 8 to 15 metres. Conditions include moderate currents and visibility typically between 5 and 10 metres. The site is suitable for beginners and supports both diving and snorkelling activities. Night diving is also permitted at this location. Water temperatures fluctuate throughout the year, ranging from 21C in the winter months to 28C in September and October. Divers should be aware of the presence of sharks at this site.

Isla Ballena, also referred to as Whale Island, is a small island located off the west coast of Espiritu Island. The site features a combination of reef topography and small cave formations. Divers can explore these structures at depths reaching up to 12 metres. The site is suitable for beginners, with mild currents typically present during dives. Access to the site is by boat only. Divers should exercise caution regarding sharp coral present throughout the area. The site provides a varied underwater environment for those interested in geological formations and reef exploration.

Cardoncito Reef is situated at the southern tip of Isla Partida, near the entrance to the Caleta Partida channel. This reef site is suitable for beginners, offering depths ranging from 3 to 10 metres with an average of 6 metres. Access is by boat, with the reef located approximately 150 metres from the shore. Divers and snorkellers can expect mild currents and visibility between 10 and 25 metres. Water temperatures fluctuate throughout the year, ranging from 21°C to 29°C. Hazards at this location include boat traffic, jellyfish, and sharp coral. Guided tours and equipment rental are available for those visiting the site.

El Embudo, located at Isla Espiritu Santo, is a distinctive dive site defined by a narrow, funnel-shaped cove featuring high vertical walls and dramatic canyon topography. The site offers deep crevices and varied underwater structures suitable for intermediate divers. Access is by boat only, and divers should remain aware of boat traffic in the area. Visibility typically ranges from 15 to 35 metres, with water temperatures fluctuating between 21C and 29C throughout the year. Species recorded around this area include California sea lions, various wrasses, groupers, and several species of moray eels and angelfish. Snorkelling is also possible at this location.

Los Islotes, located off Isla Espiritu Santo, features a diverse underwater topography consisting of reefs, walls, and caves. The site offers two primary dive areas: a shallow southern section featuring a cave and a deeper northern section. Depths range from 6 to 30 metres, with an average of 10 metres. Access is by boat only, and divers should be prepared for moderate currents and visibility between 10 and 30 metres. The site is suitable for beginners and offers a 45-minute typical dive duration. Water temperatures fluctuate between 20C and 26C throughout the year. Hazards include overhead environments and sharp coral structures.