Turner Island is a challenging reef site located off San Carlos, Mexico, defined by strong currents that require expert-level buoyancy and navigation skills. Divers typically explore depths between 20 and 35 metres. Visibility is limited, ranging from 5 to 10 metres, necessitating careful planning. Water temperatures fluctuate significantly throughout the year, from 16C in the spring to 27C in late summer, with potential thermoclines. Access is strictly by boat, and divers must be self-sufficient. Due to the intensity of the currents, which can shift rapidly, maintaining close proximity to the boat during entry and exit is essential for safety.

Ensenada del Perro, located on the western face of Tiburon Island near San Carlos, is a protected cove featuring a reef system. The site is suitable for intermediate divers and offers excellent conditions for snorkelling. Access is available from both the shore and by boat. Divers should be aware of moderate currents and potential boat traffic in the area. The water temperature fluctuates significantly throughout the year, ranging from 17C in the winter months to 30C in August. Divers and snorkellers should exercise caution regarding sharp coral present on the reef.

North Wall in San Carlos is a reef and wall site that begins at a shallow depth of 5 metres and descends to 23 metres. The site is accessible by boat and is suitable for intermediate divers. Conditions include mild currents and variable visibility, requiring careful monitoring of depth. The wall features recesses that are best explored with a torch to observe nudibranchs, gobies, blennies, and black coral. Night diving is permitted, offering a different perspective of the reef structure. Water temperatures fluctuate seasonally between 17 and 28 degrees Celsius, making the site accessible throughout the year.

Arroyo is a boat-accessible site located 10 kilometres off San Carlos, Mexico, featuring a combination of reef, wall, and drift diving. The topography ranges from 9 to 35 metres, with an average depth of 25 metres. Divers frequently encounter California sea lions, groupers, and sea stars, while less common sightings include Panamic green morays, jewel morays, scorpionfish, jawfish, spiny lobsters, razor surgeonfish, wrasses, arrow crabs, hawkfish, Panamic cushion stars, and various snails. The wall also hosts black coral. Conditions include mild currents and visibility between 5 and 20 metres. Due to significant drop-offs and variable visibility, this site is suited for intermediate divers capable of managing deep profiles.

Corralito is a shallow reef site located 1000 metres offshore from San Carlos, Mexico. Reaching a maximum depth of 11 metres, the site is well-suited for beginner divers and offers long bottom times. Divers access the reef by boat, where moderate currents are common. Visibility at the site reaches up to 10 metres. The reef structure provides a habitat for various marine life, and the site is also open for night diving. Water temperatures fluctuate between 17C and 30C throughout the year. Divers should remain cautious of sea urchins on the reef, as well as the presence of jellyfish and sharks in the area.

Chayo’s Cave in San Carlos offers an introduction to overhead environments, combining a natural cave structure with an artificial reef. Divers explore depths between 9 and 17 metres, with visibility ranging from 10 to 25 metres. The site features mild currents, making it manageable for beginners, though the overhead environment requires careful buoyancy control and awareness of the ceiling. Access is by boat only, and a torch is recommended for exploring the cave interior. Water temperatures fluctuate significantly throughout the year, ranging from 17 to 30 degrees Celsius, necessitating appropriate thermal protection based on the season. Night diving is permitted at this location.

Bob's Mistake is a shallow reef located off San Carlos, Mexico, reaching depths of 18 metres. The site is suitable for beginners due to its mild currents and manageable topography. Divers can explore the reef structure, which includes sandy patches and crevices. Access to this site is by boat only. Water temperatures fluctuate significantly throughout the year, ranging from 17 degrees Celsius in winter to 29 degrees Celsius in late summer. Visibility is variable, so it is recommended to check with local operators for current conditions before planning a dive. A 5mm wetsuit is advised during the cooler months to maintain comfort.

Rabijunco is a reef dive located off San Carlos, Mexico, accessible only by boat. The reef structure extends from the surface to a maximum depth of 23 metres, providing a suitable environment for beginner divers. Conditions feature mild currents, though water visibility varies significantly. Divers frequently encounter California sea lions, while other recorded species include Panamic green morays, king angelfish, jewel morays, spiny lobsters, scorpionfish, groupers, jawfish, arrow crabs, wrasses, sea stars, Sally Lightfoot crabs, snails, and chromis. Due to the 11-degree annual temperature fluctuation, divers should confirm appropriate wetsuit thickness with a local operator before departure. Maintain a safe distance from all marine life, as dangerous species are present in the area.