Wikipedia
Mahamba
Mahamba people are originally from the Congo
Mahamba is a cryptid rumoured to lurk in the People's Republic of the Congo, around the Lake Likouala swamp region. It is purported to be an enormous crocodile; reaching lengths of up to . Some have speculated that it is a freshwater relic of the mosasaurs; huge, sea-dwelling lizards which were presumed extinct by the end of the Cretaceous period.
The Bobangi aboriginals have proclaimed this animal to be unlike any other they have seen, and have only compared it to other creatures, such as a Nkoli (the Bobangi word for crocodile) or the legendary Nguma-monene for the sake of comparison. It is also reported to attack and devour rafts and canoes.