Original sentence: " It is said to have a tail that is horizontal, rather than vertical, like that of a porpoise.It is often described as having snake or eel-like qualities (being reported in waterways where ordinary-sized eel species are common) and is said to traverse the river and streams in an undulating fashion with 2-3 "humps.Those who claim to have seen the Altamaha-ha describe it as being 10 to 50 feet in length