The West Coast
From the la Pirogue, divers are taken to some 20 sites. Very useful for beginners is Aquarium, a rocky reef area with plenty of angelfish, kingfish and butterfly fish plus lots of wire coral. Watch out for the stonefish. It goes to 15m. This is a site where night dives are conducted for experienced divers.
For some cave diving, try the Cathedral - a huge underwater cave in which lionfish, kingfish and squirrelfish are common. For experienced divers there is Mana - a deep dive of 47m on rock faces. Impressive emperor angelfish, white tipped reef shark and shoals of game fish are present.
A place where one is almost guaranteed sharks, rays and barracuda is Rempart L'Herbe (shark place). It is a deep dive (42-50m), on a pinnacle with steep slopes. Other big fish like wahoo, tuna and large rays usually seen, as are white tipped reef sharks which congregate in this place. Hammerheads too, may be seen.
Rempart Suisse is one of the longest Mauritius reefs with some 30 dive spots, from 12 to 80 meters, all within 15 min from the La Pirogue hotel. The site Canon is a 19th century shipwreck, which lies at 22m.