Lighthouse is a combined natural and artificial reef located 1000 metres off the coast of San Carlos Bay. The site features depths ranging from 7 to 15 metres, with an average depth of 10 metres. Access is by boat only. Conditions are generally manageable with mild currents, though these can strengthen, and visibility typically spans 10 to 30 metres. Water temperatures fluctuate significantly throughout the year, ranging from 18°C in winter to 29°C in summer, with potential thermoclines at depth. Divers should remain aware of jellyfish and changing current conditions during their 50-minute dives.

Haystack is a shallow reef located 1000 metres from the shore in San Carlos Bay. The site maintains a consistent depth of 7 metres, making it suitable for beginner divers. Visibility typically ranges between 10 and 30 metres. Divers should be prepared for moderate currents and must exercise caution regarding boat traffic when surfacing. The reef structure features sharp coral and rocks, requiring careful buoyancy control to avoid contact. Water temperatures fluctuate significantly throughout the year, ranging from 19C to 31C. Night diving is permitted at this location. Species recorded around this area include California sea lions, king angelfish, groupers, triggerfish, and various invertebrates such as sea stars and spiny lobsters.

Guaymas is a marine dive site located in San Carlos Bay, Mexico. The site features a consistent depth of approximately 10 metres. Water temperatures at this location fluctuate throughout the year, ranging from a low of 19C in the winter months to a high of 30C during August. Given the depth and conditions, this site is suitable for divers looking for a straightforward, shallow experience. Records for this location date back to 2012, indicating its established use as a local diving destination.

Window Rock is a shore-entry reef dive located in San Carlos Bay, Mexico. The site features depths ranging from 9 to 14 metres, with an average depth of 12 metres. Divers can expect mild currents and visibility between 3 and 6 metres. Due to the presence of sharp coral and potential surge, divers should exercise caution during entry and descent. The site is suitable for beginner divers, with typical dive times around 45 minutes. Water temperatures fluctuate significantly throughout the year, ranging from 18 to 29 degrees Celsius. Species recorded around this area include groupers, triggerfish, sea slugs, sea hares, Panamic cushion stars, and Panamic sergeant majors.

Isla Pastel is a small island situated in San Carlos Bay, directly opposite the mouth of the Estero El Soldado. The site features shallow reefs surrounding the island, with depths ranging from 5 to 15 metres and an average depth of 10 metres. Divers and snorkellers can access the site by boat or from the shore, though the distance is approximately 3500 metres. Conditions include mild currents and visibility that varies between 3 and 15 metres, as the tidal flow from the nearby estuary can influence water clarity. The site is suitable for beginners, with typical dive times lasting around 45 minutes.

Honeymoon Island is a shallow reef site located 500 metres off the coast in San Carlos Bay. With an average depth of 2 metres and minimal current, it is suitable for beginner divers. Visibility typically ranges from 10 to 30 metres, providing clear conditions for observing the reef environment. Water temperatures fluctuate significantly, ranging from 18 degrees Celsius in February to 30 degrees Celsius in August and September. Access to the site is by boat only, with dive shops and charter services available in the nearby town of San Carlos. Species recorded around this area include California sea lion, king angelfish, Panamic green moray, scorpionfish, round stingray, and spiny lobster.

Punta Cuevas is a rocky point located at San Carlos Bay, featuring underwater arches and small caves. This shore entry site is suitable for intermediate divers and offers visibility ranging from 10 to 30 metres. Divers may experience mild currents during a typical 45-minute dive. The site is also accessible for snorkelling, with a rating of 3 out of 5. Water temperatures fluctuate between 18C and 30C throughout the year. Potential hazards at this location include jellyfish, rip currents, and sea urchins. The topography is defined by its rocky structure and cave formations.

Seamount is a pinnacle and reef site located off San Carlos Bay. The structure rises from a depth of 30 metres to a shallow point at 6 metres, with an average depth of 15 metres. Divers should expect moderate currents and visibility between 10 and 30 metres. Due to the offshore location, boat access is required. Divers must maintain good buoyancy to avoid contact with sharp coral and rocks. Thermoclines are common, and water temperatures vary from 18C to 28C throughout the year. Species recorded around this area include California sea lions, Panamic green morays, king angelfish, scorpionfish, pufferfish, round stingrays, groupers, triggerfish, spiny lobsters, and threebanded butterflyfish.