The Bay of Funy (French: Baie de Fundy) is a bay on the Atlantic coast of North America, on the northeast end of the Gulf of Maine between the Canadian provinces of New Brunswick and Nova Scotia, with a small portion touching the U.S. state of Maine. The Bay of Fundy is known for its high tidal range and the bay is contested as having the highest vertical tidal range in the world with Ungava Bay in northern Quebec and The Severn Estuary in the UK. The name "Fundy" is thought to date back to the 16th century when the Portuguese referred to the bay as "Rio Fundo" or "deep river".