Chankanaab

Chankanaab is a shallow reef dive located opposite Chankanaab Park on the island of Cozumel, Mexico. Its Mayan name means "Little Sea," and the reef forms a natural lagoon-like environment that is sandy in character with small coral heads, coral boulders, and areas where freshwater from the cenote system meets seawater, creating a visible halocline at cave mouths. The reef is divided into three sections: Chankanaab Shallow (10–27 m / 30–50 ft), Chankanaab Balones (18–21 m / 60–70 ft), where spherical coral head clusters sit atop boulders roughly 10 m (33 ft) high, and Chankanaab Caves (10 m / 35 ft), where divers can explore the entrances to the cave system.

The site reaches a maximum depth of around 12.7 m (42 ft), with most dives conducted in the 35–40 ft (10–12 m) range, making it well suited to beginners and those learning to scuba dive or snorkel. Conditions are mild with minimal current, and visibility is generally good, though run-off from the nearby local lagoon can reduce it compared to other Cozumel sites. It is frequently done as a second dive of the day.

Entry can be made directly from the shore inside the park — no boat is required — and the calm, shallow water means divers and snorkelers can spend extended time on the site. Underwater statues and other installed attractions are present on the reef. The sandy bottom and small coral heads hold plenty of macro life, making it a productive site for underwater photographers.