Glass-Bottom Boat Lagoon Tour

The glass-bottom boat lagoon tour is a relaxed way to see the coral gardens and marine life of Mayotte without getting into the water. Mayotte is a French overseas department in the Comoros archipelago, surrounded by one of the world's largest enclosed lagoons, with a double barrier reef that shelters more than 700 species of fish and extensive coral. Boats depart from the port of Mamoudzou or the pier at Dzaoudzi on Petite-Terre, and routes vary across the lagoon, passing over coral heads, seagrass beds and sandy channels where turtles, rays and reef fish can be spotted through viewing windows in the hull. Tours last two to four hours and cost about €35 to €60 per person. The activity has no fitness requirement and no age limit beyond what the operator sets for boat safety, which makes it suitable for families, older visitors and people who prefer not to swim or snorkel. Boats provide viewing windows and basic shade, and nothing needs to be brought, although sunscreen, a hat, water and a camera are sensible. Listed operators include Nautivoyage and Ambiance Lagon, which can be reached through the Mamoudzou tourist office. Skippers give a safety briefing, life jackets are carried on board, and radios link the boat to port authorities; in an emergency, patients are taken back to the dock and on to the hospital in Mamoudzou. The lagoon is generally calm, but strong trade winds and squalls can reduce visibility through the glass and lead to schedule changes. The best period is April to November, when water clarity is highest and rainfall is lower, though tours run year-round. Midday light gives the best visibility through the glass, while early departures are cooler and calmer.