Tidal island


A tidal island is a piece of land that is connected to the mainland by a natural or man-made causeway that is exposed at low tide and submerged at high tide. Because of the mystique surrounding tidal islands, many of them have been sites of religious worship, such as Mont-Saint-Michel with its Benedictine Abbey. Tidal islands are also commonly the sites of fortresses because of their natural fortifications.

Diagram of tidal island at low tide and high tide
St Michael's Mount, Cornwall, at high tide, c.1900
Cramond Island, Scotland, at high tide: the causeway is submerged, but the anti-boat pylons are still visible

List of tidal islands


Asia

Hong Kong
Iran
Japan
Republic of China (Taiwan)
South Korea

Europe

Denmark
Denmark/Germany
France
Mont Saint-Michel in Normandy
Germany
Guernsey
Iceland

Grótta in Seltjarnarnes, the Capital Region

Ireland
Italy
Jersey
Spain
United Kingdom
Rough Island opposite Rockcliffe, Dumfries & Galloway, Scotland
Worm's Head at the end of Gower, Wales
England
Northern Ireland
Scotland
Wales

43 (unbridged) tidal islands can be walked to from the UK mainland.[1]

North America

Canada
United States
Bar Island in Maine, U.S.

Oceania

Australia
New Zealand
Rangitoto Island forms a backdrop to a wave-cut platform off Achilles Point, Auckland, New Zealand.

See also


References


  1. Peter Caton (2011). No Boat Required – Exploring Tidal Islands. ISBN 978-1848767-010.
  2. longpointisland.com Archived 2007-09-27 at the Wayback Machine