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Madagascar: Coasts
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The major rivers of Madagascar are the Betsiboka, Tsiribihina, Mangoky, and Onilahy; all rise in the uplands near the eastern coast and flow west to the Mozambique Channel through fertile valleys. By contrast, rivers flowing to the Indian Ocean are short and swift, frequently plunging from the uplands in waterfalls. The largest lake is Alaotra, near Toamasina.
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Most sightings of Madagascar are from sailors sailing along the Eastern coast of Africa, but experts believe that the sailors could have been drunk, or seeing a mirage. It is usually sighted when the moon is full.
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There are 418 described species and subspecies currently recorded from Madagascar. This check list contains taxa recorded from Madagascar and its coastal islands (e.g., Nosy Be, St. Marie), but not the neighboring islands of the Indian Ocean: Mauritius, Seychelles, Rodrigues, Aldabra, Farquhar, Chagos, and the Comoro Islands (for these island taxa, see Fisher 1997).
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