Thomas Reef, located in the famous Strait of Tiran, is the smallest yet most diverse of the coral reefs in this historically significant maritime passage. Despite its size, it's a highly popular dive site, offering a dramatic topography that transitions from steep wall dives into intricate canyons and expansive plateaus. The southern and northern areas feature vertical walls that lead to plateau sections approximately 25 meters deep on the southeastern side, with a maximum depth of 29 meters.
Divers can expect a vibrant display of Red Sea marine life, including abundant reef fish and diverse coral formations, encompassing both hard and soft corals. Thomas Reef is particularly renowned for encounters with larger pelagic species; sharks are frequently observed resting in sandy patches on the plateaus, and schools of tuna and snapper congregate around the reef, especially during the summer months. A striking 'fence' of Gorgonia fans often lines the coral edges of the plateaus.
Challenging weather conditions along the western side often restrict access, making drift diving a common experience with potentially strong and variable currents at both ends of the reef. Divers should exercise caution when navigating these currents, which can enhance the drift diving experience but require appropriate skill levels. Under favorable conditions, it's possible to explore the other side of the reef, which also features a vertical wall descending into deeper waters. The best time to visit for observing schools of tuna and snapper is during the summer, though the site offers excellent diving year-round for its diverse landscape and general Red Sea fish abundance. Its varied depths and wall sections also provide ample opportunities for freedivers.
