Thomas Reef canyon and coral context.
Tiran wall reef with canyon, current, and sharks
Tiran wall reef with canyon, current, and sharks
Thomas Reef is part of the Straits of Tiran and is accessible via boat. The dive features two walls, with the east wall dropping dramatically and the west wall containing caves and overhangs. A canyon beginning at 35 meters runs parallel to the reef, and diverse marine life is present throughout the site.
Conservative baseline from public research. No community dives logged yet.
Depth range, seasonality, and planning context.
Reported Depth
0.5m - 92m
Depth Note
The reef starts very shallow, while Thomas Canyon begins at 35 m and drops beyond 90 m.
Best Season
Year-round, with calmer weather windows easiest to dive.
Typical Conditions
A colorful wall reef with a calm eastern side, strong-current ends, and a deep canyon that becomes progressively more technical. The western side can be pickier on pickup.
Hazards, restrictions, and access requirements.
Key Hazards
Safety Notes
Treat Thomas Reef as a drift dive, stay alert for downcurrents at the reef ends, and keep the canyon and overhang sections for the right training.
Access Restrictions
Boat drift pickup is part of the standard plan here.
Legal Notes
Follow operator limits for canyon and arch sections and the local Tiran Strait diving plan.
Community notes to help plan your visit.
Scuba Diving
Boat-access drift dive with a clear itinerary around the reef walls, plateau, and canyon depending on gas and training.
Freediving
Not a freedive site; the depth, current, and canyon profile make it a scuba-only target.
Snorkeling
Not a snorkel site; it is a deep boat reef for divers with the right training.
Species commonly reported at this site, with direct links into their wildlife guides.
Community dive logs and visit reports for this site.
Average conditions based on logged dives & visits.
Planning answers for access, conditions, timing, and site logistics.
Last Updated
Research Sources
Thomas Reef canyon and coral context.
Eastern wall, coral, and marine-life reference for Thomas Reef.
Difficulty and canyon-depth reference for Thomas Reef.
Drift-dive and pickup notes for Thomas Reef.
Current and month-by-month visibility reference.
Coral diversity and wildlife reference for Thomas Reef.
Know this site? Improve Spot Details.

Boat dive on a shallow reef-and-wreck site in the Strait of Gubal.

Umm Usk is a shallow coral garden with dolphins and rich reef life.

Exposed Red Sea reef with strong drift potential.

Bluff Point is a Red Sea wall dive with strong current.

Red Sea reef with coral gardens, turtles, and current.

Bluff Point (Small Gubal island) is a boat drift with wall and wrecks.