Punta Narragansett is a rugged point located on the western coast near San Carlos. The underwater topography is defined by large boulders, which create a complex environment for exploration. This site is accessible only by boat and is suited for intermediate snorkellers due to the presence of moderate currents. Water temperatures fluctuate significantly throughout the year, ranging from 17C in the winter months to 30C in August. Snorkellers should remain aware of boat traffic in the area and exercise caution regarding sea urchins found on the reef structure.

El Choyudo is a boat-access reef dive located off San Carlos, Mexico. The site features depths ranging from 20 to 30 metres and visibility typically between 5 and 10 metres. Divers should expect moderate currents throughout the dive, making it suitable for intermediate skill levels. Water temperatures fluctuate seasonally between 17C and 28C, requiring careful selection of exposure protection. Hazards at this location include the presence of jellyfish and sharks. Shore facilities near the departure point include parking, toilets, showers, a cafe, and equipment rental services. Divers are advised to follow boat captain briefings regarding current conditions and to consider timing dives around slack water.

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.

Punta Willard (Northwest Tip) is a high-energy site located where the open Gulf meets the island. The topography consists of dramatic underwater rock formations, featuring both reef and wall structures. Due to the exposed nature of this location, divers encounter moderate to strong currents, making it suitable for advanced divers only. Water temperatures fluctuate significantly throughout the year, ranging from 17C in winter to 30C in late summer. The site supports a diverse range of marine life typical of the region, including various reef fish and invertebrates. Boat access is required to reach this site, which is also highly rated for snorkelling.

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.

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.