Submarine Tours in Mauritius: Worth It?

A submarine tour in Mauritius lasts about 2–3 hours from the moment you arrive at the departure point (usually Trou-aux-Biches or nearby) until you’re back on land. You board a small tourist sub that takes 8–12 people down to roughly 30–35 meters. The ride is calm and stable—no rolling like a boat. Once underwater you’ll spend about 30–40 minutes gliding over coral reefs and, on some routes, a couple of wrecks. Visibility is usually good but depends entirely on the weather and plankton levels that day. Expect to see schools of fish, occasional turtles, and colorful reef structures. It’s not a thrill ride; it’s closer to a slow-moving underwater observatory. Kids over about 4–5 usually love it, but anyone prone to claustrophobia should think twice before squeezing into the cabin.

The best time is the dry season from May to November when seas are calmer and water clarity is typically better. December to April can still work but rain and wind increase the chance of cancellations or poor visibility. Expect to pay around $90–$160 per adult depending on whether you choose a basic reef dive or one that includes a wreck. Children are usually 30–50% cheaper.

Pick the shorter morning departures when the sea is flattest and light is best. Skip the add-on “glass-bottom boat only” packages if you’re already doing the sub—they’re far less impressive. Bring a light jacket; the sub can feel chilly once you descend.