 Like so many other areas of Quebec, Blue Sea grew and prospered because of the forest industry, which in turn was dependent on the abundant waterways of the region, especially the Gatineau.According to legend, a monstrous snake-like animal with a horse head used to live in this lake.Presumably seen by several people between 1913 and 1930, this exceptionally long, large, and fast seahorse has no longer given any signs of life since, except around 1980 in the Baskatong Reservoir, located much further north.