About seven kilometres south of Anakao is Nosy Satrana, a small uninhabited island with excellent snorkelling and diving spots.
The island's name derives from the most common palm in Madagascar, the Bismarckia nobilis. Nosy Satrana can be translated into Island Bismarckia nobilis.
Heron birds can usually be seen resting in large tamarind trees. At low tide, the island can be reached by foot, just follow the zebu herdsmen that usually go there to graze their cattle. Ancient eggshells of the extinct elephant-bird (Aepyornis maximus) can be found while snorkelling around the island.