Tied island

Tied island
View from the Isle of Portland looking towards the mainland of Great Britain. Chesil Beach on the left connects the tied island to the mainland.
St. Ninians Isle- a tied island in all but the highest tides

Tied islands, or land-tied islands, as they are often known, are a landform where the island is only connected to land by a tombolo—a spit of beach materials connected to land at both ends. The Isle of Portland on the south coast of England is an example of this; it was once an island but is now linked to the mainland by Chesil Beach. Other examples include St. Ninian's Isle, Shetland; North Island, San Diego, California; and Barrenjoey, New South Wales in Australia.


References

External links