The Mokele-Mbembe has been around since 1913, living in the
African Congo amongst other locations.
One of the earliest eyewitness accounts comes from Firman Mosomele, who claimed to have seen it when 14 years of age.
He described the creature as being reddish brown in colour, with its snake-like head and neck sticking 6-8 feet above water.
When Mosomele was shown a book of animals, he instantly pointed to a picture of a sauropod dinosaur, identifying that as the Mokele-Mbembe.
Sceptics believe the most likely explanation for sigtings is the mis-identification of large pythons.