On a recent visit to Taï National Park, in southwestern Côte d’Ivoire, Mongabay accompanied Ivorian environmental scientist Christine Kouman on a night-time boat trip up the Hana River. The river is home to Africa’s rarest crocodile, the critically-endangered West African slender-snouted crocodile. For more than a decade Kouman, whose work has been supported by Project Mecistops.