Cenote Diving at Yaakun & Tajma Ha: Open Cavern Dives in Cozumel

On the southern edge of Cozumel, off the limestone shelf of Quintana Roo, Cenote Diving: Yaakun & Tajma Ha offers a rare freshwater contrast to the island’s reef walls. These two open caverns—Yaakun and Tajma Ha—are collapsed limestone sinkholes where sunlight spills into clear groundwater, illuminating scalloped rock, stalactites and suspended silt. The dives stay in the "cavern" zone: the entrance remains in sight, natural light reaches the bottom, and excursions are recreational rather than technical cave penetrations.

Operated by Barefoot (barefootdivecenter), the full-day trip runs 8:30 AM to 2:30 PM and caters to certified divers of all levels. Groups are kept intimate—maximum four divers per instructor—so guides can tailor briefings, line procedures and buoyancy coaching. Expect guided descents into freshwater layers and the occasional halocline—where clearer fresh water meets denser salt—plus small swim-throughs and vaulted ceilings thick with tufa and flowstone. Typical depths are shallow to moderate, which makes these sites ideal for practicing trim while taking in dramatic light shafts.

Why this trip stands out: on Cozumel, where coral reef walls dominate marketing photos, Yaakun & Tajma Ha offer geological contrast and freshwater ecology. Limestone bedrock here is visibly eroded, with honeycombed rims and crisp overhangs that reveal how the Yucatán was sculpted. Because the dives are in open caverns rather than penetrative caves, they provide an accessible way to experience cenote geology without technical cave training.

Practical notes: Open Water certification is required. Divers should be comfortable with basic navigation and neutral buoyancy; strong finning technique helps control silt. The day includes surface intervals and time ashore; bring a towel, reef-safe sunscreen, drinking water, and any personal gear not provided. The operator’s booking page handles reservations; plan ahead—small group sizes mean trips fill fast during high season.

Local context: these cenotes are part of the Yucatán karst landscape and connect to inland aquifer systems that supply freshwater to the island. Wildlife sightings can include blind cavefish and roosting bats near the rims, while surface pools sometimes host freshwater shrimp. Practicing strict no-touch and respect for freshwater flow is essential: these aquifers are fragile and sensitive to pollution.

Bring a compact underwater camera or a camera housing with a wide-angle lens to capture beams and vaults; guides can pause in calm spots for composition practice. Barefoot’s small-team format lets instructors offer personalized skills checks—air management, slow ascents, and line discipline—so even nervous divers gain confidence. Book early in high season and consider an additional surface interval swim at a nearby shoreline to rinse gear and enjoy island sun comfortably.

For divers who want both technical clarity and relaxed instruction, Cenote Diving: Yaakun & Tajma Ha is a crisp, light-filled day that broadens the Cozumel dive picture from reef to cavern.