The difficulty of access to this area has created a natural laboratory that has engendered unique forms of wildlife, long reserved for scientists. In a landscape of steep cliffs, where the altitude varies between 75 and 2132 metres, shrubs and lichens hang from the trees. At low altitudes, the dense forest canopy reaches 35 metres. Over 275 species of ferns have been identified there! Above 1400 metres, the trees become more stunted.
As for the fauna, there are 11 species of lemurs, including the highly endangered silky sifaka. Living beside them are 115 species of birds, including the serpent eagle and 148 species of reptiles and amphibians which account for one third of those present on the island! Marojejy remains largely unknown and is guaranteed to be off the beaten track of any stay in Madagascar.