Mauritius
A protected 353-hectare marine reserve in south-east Mauritius near Mahebourg, popular for shallow, beginner-friendly reef diving and snorkeling.
Blue Bay Marine Park was declared a national park in October 1997, granted Marine Park status in June 2000, and designated a Ramsar Wetland of International Importance in 2008. Diving guides describe it as a shallow reef and lagoon area well suited to beginners, with dive operators based at Blue Bay Beach also offering trips to nearby Ile des Deux Cocos.