Southwest of Fort-de-France on Martinique, the snorkeling at Grand Anse d'Arlet is some of the best on the island. The best time for snorkeling at Anse d'Arlet is the weekdays when it is empty. It is located to the south-southwest of Fort de France and southwest of Les Trois Ilets. You might even spot some sea turtles.
The historic city of Saint-Pierre makes a good base. After a long day of adventuring, try the restaurant Le Guerin in the popular market building.
To reach the snorkeling on Martinique by air, fly in to the Martinique Aime Cesaire International Airport (FDF) located southeast of the capital, Fort-de-France.
In addition, there is a ferry called L'Express de Iles that interconnects Dominica, Guadeloupe, Martinique and St Lucia.
Overall, Grand Anse d Arlet is the 2nd most popular snorkel dive spot of all 9 snorkeling dives in Martinique.