 Just over to the west, in Cayamant, is another, somewhat smaller lake called "Lac de la Mer Bleue", which also means "Blue Sea Lake".To distinguish between these two lakes, the English name is used for the larger one, even in French.The town of Blue Sea is in the centre of what is known as the Upper Gatineau region and is surrounded by a number of other lakes, rivers, ponds, and wetlands — and true wilderness areas.