First record of an immature green turtle Chelonia mydas (Linnaeus, 1758) (Testudines: Cheloniidae) on a fluvial island, Reserva Biológica do Parazinho, Amazonas river, Brazil

On March 8th, 2011 we recorded an immature green turtle Chelonia mydas at the Reserva Biológica do Parazinho, eastern Amazonia, Brazil. This record of C. mydas on a fluvial island, where the aquatic environment is a mixture of fresh and salt water, suggests that this typical marine species potentially tolerates lower levels of water salinity.