Shipwreck -Thermopylae Sierra

The Thermopylae Sierra Shipwreck is one of Colombo’s most iconic dive sites, located about 7.18 kilometers offshore and reachable by boat in approximately 15 minutes. Resting at a maximum depth of 24 meters, this fascinating wreck is suitable for Open Water Divers and is also compatible with Nitrox (Nx 32). The site offers opportunities for photography and videography, and advanced divers can explore deeper penetration areas with the guidance of experienced instructors. Originally known as the MV Thermopylae Sierra, the vessel sank on 23rd August 2012 due to damage and undermaintenance. Measuring 155 meters long, 27 meters wide, and 10 meters high, the wreck now serves as a thriving artificial reef teeming with marine life. Divers can explore its deck-level cabins, collapsed bridge, and underwater platforms, making it a true underwater playground. Today, the wreck is surrounded by a vibrant community of fish — shoals of fusiliers, large groupers, and even the occasional eagle ray or reef shark cruising in the blue. The site’s combination of accessibility, size, and marine biodiversity makes it a must-visit for both recreational and advanced divers. With a 4-star Island Scuba rating, the Thermopylae Sierra promises an unforgettable underwater experience filled with adventure, history, and natural beauty.