Sable Island is a small Canadian island situated 300 km southeast of Halifax, Nova Scotia, and about 175 km southeast of the closest point of mainland Nova Scotia in the North Atlantic Ocean.
The island is protected and managed by Parks Canada, which must grant permission prior to any visit. Sable Island is part of District 7 of the Halifax Regional Municipality in Nova Scotia. However, the Constitution of Canada specifically names the island as being under the authority of the federal government. The island is also a protected National Park Reserve and an Important Bird Area. The park is home to hundreds of species of flora and fauna including a breed of the unique Sable Island horse. The park is also a breeding ground for marine life.
The expedition of Portuguese explorer João Álvares Fagundes explored this region in 1520–1521 and they were among the first Europeans to encounter the island. It is likely that he named the island "Fagunda" after himself.
Sable Island is famous for its large number of shipwrecks. An estimated 350 vessels are believed to have fallen victim to the island's sand bars. Thick fogs, treacherous currents, and the island's location in the middle of a major transatlantic shipping route and rich fishing grounds account for the large number of wrecks.
Sable Island is a narrow, crescent-shaped sandbar with a surface area estimated around 34 km2. Despite being approximately 43.15 km long, it is only 1.21 km across at its widest point. The long crescent-shaped island rises gently from the shallows of the continental shelf approximately 285 km east of Halifax, Nova Scotia.
Sable Island is believed to have formed from a terminal moraine deposited on the continental shelf near the end of the last Ice Age. It is slowly moving as waves erode the western shore and new sand is added on the eastern shore, and continually changing shape through the effects of strong winds and violent ocean storms.
According to wikipedia.org