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.

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.

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.

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.