Nosy Satrana
From MadaCamp
About seven kilometres south of Anakao is Nosy Satrana, a small uninhabited island with excellent snorkelling and diving spots.
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.