Underwater. Note: not to be confused with Equestrian, for those of us who assume otherwise. It does involve the water but does not, in any way shape or form, involve horses
by argumentwinner123 November 12, 2012
One who travels by water. Using the same reasoning that a person who travels by horse is an equestrian and a person who travels by foot is a pedestrian then a person who travels by water is an aquestrian. I coined the word for my own use when I first named my sailboat in 1987. I am not aware of any documented use of the word prior to that date.
by Bill Pogson November 08, 2007