Blue Bay Marine Park

Mahebourg · Grand Port · Mauritius

Blue Bay Marine Park occupies 353 hectares of protected lagoon on the southeastern coast of Mauritius, near the historic town of Mahebourg. Established in 1997 as the island's first and most significant marine reserve, the park has become a showcase for what Mauritian reefs can achieve when given proper protection. Within its boundaries, 38 species of coral, 72 species of fish, and a remarkable diversity of marine invertebrates thrive in waters so clear that the entire reef is visible from the surface. The lagoon is shallow, ranging from one to six metres in depth, with coral formations rising close to the surface in many areas. This creates an underwater garden of extraordinary beauty: table corals spread their wide platforms across the sandy floor, fire corals add flashes of golden yellow, and delicate staghorn corals branch upward through the water column. The park's crown jewel is a giant brain coral estimated to be over 1,000 years old, measuring five metres in diameter, which has become one of the most photographed natural features in Mauritius. Despite the shallow depths, the marine life is abundant and varied. Butterflyfish in vibrant pairs, surgeonfish in grazing schools, clownfish nestled in sea anemones, and parrotfish crunching on coral are all part of the daily show. Pennant coralfish, rainbow wrasses, sergeant majors, and damselfish add layers of colour and movement. Hawksbill and green turtles are occasional visitors, gliding through the coral gardens with unhurried grace. Blue Bay is primarily a snorkelling and glass-bottom boat destination rather than a scuba diving site, though some operators offer introductory discover scuba experiences in the lagoon. Its real value lies in its accessibility and the quality of its reef. Located just 15 minutes from the international airport, it is often the first or last underwater experience visitors have in Mauritius, and it consistently leaves a lasting impression. For families, non-divers, and anyone who wants to witness a thriving coral ecosystem without strapping on a tank, Blue Bay Marine Park is an essential Mauritius experience.