Corsica is in the Mediterranean, a relatively small and enclosed sea (1% of the world’s ocean surface) that represents a major source of biodiversity. It is estimated that the Mediterranean contains 8% of the world’s sea life, with an endemism rate of nearly 30%. The posidonia seagrass (or Neptune Grass), in particular, provides a remarkable environment that is easy to explore from the coast. Although it is easy to come across wrasse, bream and starfish in the Corsican waters, it is also possible to see (if you select your spots carefully and with a little luck), moray eels, cuttlefish and stingrays.

Snorkeling Corsica's rocky coast
Sharp eyes might glimpse a Mediterranean moray eel hiding in the rocks (left, picture taken in Centuri). Right: rocky coast at Cala di Reta, near Ajaccio.

Almost all of the Corsica coast, most of it rock, is adapted to snorkeling. Here a series of small hidden or accessible beaches and creeks await you, with infinite snorkeling possibilities. The paradisiacal beaches in the south-east of the island (Santa Giulia, Rondinara, Palombaggia), the Gulf of Porto, the Isolella peninsula, the cliffs of Bonifacio or Cap Corse have many snorkeling spots that are easy to access from the shore.

Snorkeling at Palombaggia Beach
Palombaggia bay’s turquoise waters (left), where schools of sargo can notably be seen (right), are hard to resist.

But for the snorkeling must in Corsica, set off for the day to one of the many natural reserves on the island. Because of their abundant underwater life and preserved condition, they are extraordinary snorkeling spots. You can explore the Cerbicales Islands, the Finocchiarlo archipelago or Scandola (listed as a UNESCO World Heritage site), but the Lavezzi Islands surely hosts the best snorkeling spots of Corsica.

Lavezzi islands snorkeling map
Cala Achiarina, Cala di u Grecu and Cala della Chiesa are three snorkeling spots located around the Lavezzi Islands, maybe the best in Corsica.

This tiny archipelago, located 10km south of Bonifacio, is made of a main island and many rocks and islets. The Lavezzi Islands have been protected as a marine reserve since 1982. The fish have long been used to human presence, so this is an exceptional place for discovering Mediterranean underwater life. Three spots of the Lavezzi (Cala Achiarina, Cala di u Grecu and Cala della Chiesa) are really recommended if you spend a day on the islands.

When to go snorkeling Corsica?

The climate in Corsica is mild and sunny, and the temperatures are almost always higher than on continental France. On the coast, average temperatures are between 70 to 80°F (20 to 25°C) from June to September, and from 55 to 70°F (14 to 20°C) the rest of the year. July/August is the peak period for tourists in Corsica, and you can expect high visitor numbers on some parts of the coast.Water temperature varies between 75 and 80°F (24 and 26°C) from July to September, and around 70°F (20°C) in June and October. Outside these months, snorkeling is limited by the cooler water temperatures, unless you have an adapted wetsuit.

Each year in Corsica there is an “Indian summer” in September and October, when the water temperature hovers around 80°F (25°C) at the surface. Most tourists have already left the island, and this is probably the ideal period for a visit.

Warm and sunny

Our favorite Europe and Mediterranean guide

This reference identification guide includes all the 860 marine fish species that may be encountered while snorkeling in coastal Western Europe and the Mediterranean.

New snorkeling spots to share in Corsica?


More than 300 spots have already been published on Snorkeling Report, but there are still many spots to be added! You too can contribute to populate the map by sharing your favorite snorkeling spots around the world. The more snorkelers will contribute, the easier it will be for you, and other snorkelers, to find sites and enjoy the underwater world!


Recommended underwater cameras

Where to spot them?

Discover on which snorkeling spots you are most likely to see your favorite species