Aldora Divers
Downtown Cozumel operator running six-diver boats on high-pressure steel tanks, with gear set up before divers board and cleaned after.
PADI7 services4 languages
Punta Tunich
Also known as: Punta Tuniche, Punta Tunish, Tunich, Tunich Cozumel, Tunich Reef
A Cozumel reef split into two named depth bands: a 15-18m intermediate shelf and, at its northern end, a wall extending to 36-40m.
Last updated September 2026
The dive
The dive starts over a wide sand patch before dropping onto the reef, and most groups settle in the 18-24 m band where the marine life concentrates along the upper wall. Approached with the current running south to north, as it typically does, the reef's northern end opens into a near-vertical face cut with caves and crevices, the section operators and divers alike single out as the more dramatic half of the dive. On a fast day it is a genuine drift: one videographer who filmed it here described the group flying and cartwheeling through the water. The dive typically closes by crossing onto a shallower sandbank around 14 m to run out no-stop time.
What makes it special
Punta Tunich is not one dive but two, sold under a single name. A 2018 park-wide academic survey grades its shallow shelf, 15-18 m, Intermediate, and treats the deeper wall, extending to 15-37 m, as a separate Advanced node, the same split the survey applies at Santa Rosa and Colombia. That survey also names Tunich among only nine reef complexes carrying the heaviest concentration of dive and snorkel traffic in the whole park1, alongside Palancar and Santa Rosa, despite far less name recognition. Regulars describe the reef with unusual affection: "Tunich never disappoints" is a line one Cozumel-based instructor's dive circle repeats. The current is as much the character of the dive as the topography, fast enough on some days that a diver's mask feels at risk, and calm enough on others to run gently the opposite way.
Know before you go
Current is the defining and only well-documented hazard here, and it has ended dives early: two inexperienced divers called theirs after 5 min on one recorded outing. Confirm the day's conditions and the planned profile, shelf or northern wall, with your guide before descending, and hold a stable drift position and let it carry you. The green moray and the endangered splendid toadfish are both denning residents, not passing visitors, so a slower pace over the sand-to-coral transition pays off. Access is boat-only; no shore entry exists on this stretch of reef.
Why Dive Punta Tunich
What makes this dive site stand out.
- Two depth bands one reef
A 2018 academic survey grades the 15-18m shelf Intermediate and the 15-37m wall Advanced
- Current defines the dive
Ranges from a fast, mask-tugging drift to, on other days, a gentle southbound flow
- North-end wall extension
A near-vertical face to 36-40m with caves and crevices, sold as part of the same dive
- Splendid toadfish stronghold
Endangered species found almost nowhere outside Cozumel, denning in the reef
- High traffic low profile
One of only nine reef nodes ranked heaviest-trafficked in a park-wide survey
Depth & Profile
15m
Min depth
37m
Max depth
18–24m
Typical range
WallReefDriftSandCoralRock
Location
20.3928°N, 87.0255°W
Conditions & difficulty
Temperature
24°C – 30°C
Visibility
20–35m
Current
Variable
Best season
Year-round
Cost
The national park charges a duty per person for each day you dive, collected by the operator with the wristband.
Checked September 6, 2026
AdvancedMin cert: Deep Diver
An AOW card covers the shallow shelf and the typical 18-24 m guided profile. The 36-40 m wall extension at the reef's northern end, which several operators sell as part of the same dive, wants a Deep Diver card or equivalent.
Summary
Current strength, not depth alone, pushes this to advanced. The shallow shelf in calm conditions dives closer to intermediate; ask the divemaster which profile is planned, shelf or wall, before descending.
Safety considerations
What can go wrong here, and what divers do about it. Conditions change - take the briefing from the operator on the day.
- Current: Strong, variable current is this reef's primary and only well-documented hazard. On one recorded outing, two inexperienced divers ended their dive after 5 min.Confirm that day's current and the planned profile with your guide before descending, and hold a stable drift position; do not fight the flow.
Marine Life
Nurse sharkGinglymostoma cirratumHawksbill sea turtleEretmochelys imbricataGreen morayGymnothorax funebrisBarracudaSphyraena barracudaSplendid toadfishSanopus splendidus
Dive Centers
View allBook a guided dive at this site.
Bluedream Cozumel
Beachfront dive centre at Hotel Playa Azul in Cozumel's north hotel zone, running a six-diver boat that also sells the northern reefs most operators skip.
SSI9 services3 languages
Cozumel Marine World
Cozumel centre on the Casa del Mar dive dock in the southern hotel strip, where divers pick the sites, with a house reef off the end of its own pier.
PADI6 services3 languages
Deep Blue
SSI-affiliated small-boat operator near Cozumel's Ferry Pier since 1995, reviewers crediting named instructors for patient, safety-first guiding.
SSI8 services
Julio Kinscuba
SSI dive shop in Cozumel's southern hotel zone, guided personally by owner and Divemaster Julio Kin, known for gear rinsed and dried between dive days.
SSI6 services
Jump Cozumel
SSI Instructor Training Center at Marina Fonatur, Cozumel, picking dive and snorkel sites with divers on the boat instead of a fixed daily rotation.
SSI6 services
Maple Leaf Scuba
Owner run PADI 5 Star IDC Resort in downtown Cozumel, guiding every dive with an instructor at one per six divers, on two boats the shop owns.
PADI7 services4 languages
DIVECODEX FOR CENTERS
Add your dive center
Get in touch to add or claim your dive center listing on DiveCodex.
Contact us
FreeReach divers
Rules and permits
- Park fee: MX$3,760 per year (2026 tariff).
- Park fee: MX$225 per day (2026 tariff).
- Conduct: no touching, no feeding, no taking anything, no disturbing wildlife, no damage to the seabed, no litter.
Frequently Asked Questions
What's the difference between Punta Tunich's shallow and deep sections?▾
They are two named depth bands on one reef, not two separate dives with the same name. The bajo, or shallow shelf, runs 15-18 m and is graded Intermediate; the profundo, a wall extension at the reef's northern end, reaches 36-40 m and is graded Advanced. Most guided dives work the 18-24 m band between the two, and it is worth confirming with the boat which profile is planned that day.
Is Punta Tunich suitable for a less experienced diver?▾
On a calm day, the shallow shelf dives closer to an intermediate reef. But the site's defining hazard is current, and it has run hard enough that inexperienced divers called a dive after 5 min. If you are newly certified, ask about that day's current and plan to stay on the shallow profile if it is running hard.
Is the splendid toadfish really found only in Cozumel?▾
Not quite, though it comes close. Its confirmed range now extends north to Isla Mujeres and south to Belize, so the 'Cozumel endemic' claim several operators still repeat is not accurate. Cozumel remains its stronghold and the site of its original description, and it carries an IUCN Endangered listing.
What should I do if the current at Punta Tunich feels too strong?▾
Signal your guide and hold a stable drift position; do not swim against it or grab the reef. Many boats plan the deeper northern wall only when conditions allow it and default to the shallower shelf on a fast day.
Why isn't Punta Tunich as well known as Palancar or Santa Rosa?▾
Name recognition, not traffic. A 2018 park-wide academic survey names it among only nine reef nodes carrying the heaviest concentration of dive and snorkel traffic in the whole park, in the same group as Palancar, Santa Rosa and San Francisco. It is simply sold less by name and more as part of a boat's daily rotation.
Are the published coordinates for Punta Tunich exact?▾
Treat them as approximate. Boats find the reef by GPS combined with local knowledge of the reef line, not by matching one precise pin, and slightly different coordinates for this same reef circulate across different charts. It is not a case for arriving with your own waypoint.
References
- 1.Revista Geografica de America Central 61E(3), Universidad Nacional de Costa Rica, July 2018 — Organizacion territorial y aprovechamiento turistico sustentable en el Parque Nacional Arrecifes de Cozumel, Mexico
DIVECODEX LOG
Every dive has a story. Share yours.
Log your dives - notes, photos, conditions and the marine life you saw - and share them as one public diver profile. What you share helps the next diver, too.
Log every detail
Depth, duration, conditions, gear, buddy, notes — all in one place. Import from Suunto and other dive computers.
Track marine life
Record species sightings on each dive. Build a personal catalogue of everything you've seen underwater.
Your public dive profile
Share your dive history, stats, and experiences with a profile page you control. Show the world where you've been.