Every July, the waters surrounding Île Sainte-Marie come alive with an extraordinary phenomenon: humpback whales arrive from Antarctica to mate and give birth in the warm waters of the Indian Ocean. The island, about 60 kilometers long and just 5 wide, transforms for three months into one of the best places in the world to observe these cetaceans up close, with sightings often occurring just a few hundred meters from the shore.
Also known by its Malagasy name Nosy Boraha, Île Sainte-Marie is located about 8 kilometers off the northeastern coast of Madagascar. Its history is intertwined with that of piracy: in the 17th and 18th centuries, the island was a refuge and operational base for numerous European pirates who controlled the trade routes of the Indian Ocean. Even today, in the southern part of the island, there is a pirate cemetery that hosts graves dating back to that period, with skulls and tibias carved on the tombstones — one of the few remaining authentic pirate cemeteries in the world.
The humpback whales: the most spectacular migration of the island
From July to September, the humpback whales (Megaptera novaeangliae) reach the protected waters around Nosy Boraha to breed. It is estimated that each year about 5,000 individuals transit along the eastern coast of Madagascar, and Île Sainte-Marie is located exactly along this migratory route. Boat excursions for observation depart from the main villages of the island and generally last between two and four hours. It is common to see males competing with acrobatic jumps, the so-called breaches, visible to the naked eye even from the mainland.
The Malagasy authorities and local associations have established precise rules for approaching the animals without disturbing them: boats must not come within 100 meters of the whales, and engines must be turned off when the cetaceans approach spontaneously. Choosing local operators who respect these rules is not only an ethical matter but also ensures more authentic sightings.
Snorkeling and Coral Reef
Beyond the humpback whales, Île Sainte-Marie offers a well-preserved coral reef, particularly accessible in the western part of the island, where the calmer waters of the bay protect the corals from ocean currents. Snorkeling is possible almost all year round, with visibility on the best days exceeding 15 meters. Among the species most frequently spotted are parrotfish, surgeonfish, moray eels, and, with a bit of luck, green sea turtles.
The small islet of Île aux Nattes (Nosy Nato), reachable by canoe from the southern tip of Sainte-Marie in just a few minutes, is considered one of the best snorkeling spots in the entire area. Its clear waters and white sandy beach make it a must-visit for anyone visiting the island.
Daily Life on the Island
The population of Île Sainte-Marie is about 25,000 inhabitants, concentrated mainly in the capital Ambodifotatra, in the central part of the island. The pace of life is slow and marked by fishing, the cultivation of vanilla and cloves, and increasingly by tourism. The main roads are partly paved, but many paths to the more remote beaches are traveled on foot, by bicycle, or with local motorcycle taxis called taxi-brousse.
The local markets of Ambodifotatra offer fresh products every morning: freshly caught fish, tropical fruits like lychee and mango, and spices grown on the island. Tasting romazava, a Malagasy stew made with meat and ravinsara leaves, in the small local restaurants is a tangible way to connect with the island's cuisine.
How to get there and practical advice
The only way to reach Île Sainte-Marie is by plane or ferry. Flights operated by companies like Air Madagascar and other regional airlines connect the island to Antananarivo and Toamasina, with flights lasting about an hour from the capital. The ferry from Soanierana-Ivongo, on the eastern coast of Madagascar, takes about two hours and is a more economical alternative but subject to sea conditions.
The best time to visit the island depends on priorities: July-September is essential for those wanting to see humpback whales, while the months from October to December offer less crowded beaches and ideal conditions for snorkeling. It is advisable to book accommodation and excursions in advance during whale season, when availability quickly decreases. Bringing insect repellent and high-SPF sunscreen is essential, as well as adapting to the island's pace: delays are the norm here, and accepting them is an integral part of the experience.
