There are 410 species of coral in the area and most of these are in very good condition due to the size of the surrounding reefs and the small population of locals who live nearby. This is a popular area providing exceptional diving conditions almost year-round, with the exception of the rainy season when storms pass through, and in September when the mornings can be windy. However, because Nosy Be is situated in a bay, it is protected from the winds, and the sea is calm in the morning but can get a bit choppy in the afternoon, due to the thermal winds.