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.

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.

Agua Dulce Cove in San Carlos, Mexico, is a reef site distinguished by a nearby freshwater spring and a prominent gorgonian sea fan forest located just offshore. The site offers both shore and boat entry options, making it accessible for intermediate divers. Water temperatures fluctuate significantly throughout the year, ranging from 17C in the winter months to 30C during the late summer. The transition from the surrounding desert landscape to the marine environment provides a unique setting for underwater activities. With a snorkel rating of 4 out of 5, the area is well-suited for both diving and snorkelling enthusiasts.

Tecomate Bay in San Carlos, Mexico, is a sheltered coastal site featuring shallow rocky reefs interspersed with sandy patches. This location is well-suited for beginners and offers accessible shore entry for snorkelers. Conditions are generally mild, with water temperatures fluctuating between 17C and 30C throughout the year. The site is historically significant as a traditional Seri campsite. Divers and snorkelers can explore the varied topography of rocky outcrops and sandy areas, which provide a habitat for local invertebrates. The bay is rated highly for snorkeling due to its calm, protected nature and shallow depths.

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.