Currents and tides of an oceancan gradually wash away a beach or other features along the coastline. This is called erosion. Strong river currents or waves from a lake can also erode a coastline. Jetties protect the shoreline of a body of water by acting as a barrier against erosion from currents, tides, and waves.
Jetties can be popular tourist attractions. They usually provide safe access to coastal areas. The Swakopmund jetty in the African country of Namibia was constructed with iron in 1905 in order to protect the towns harbor from gathering too much silt, or sediment. This jetty was renovated in 2006 and is popular with tourists because of the view it offers of Namibias coastline.
The most famous jetty is probably Spiral Jetty, a large sculpture created by the artist Robert Smithson in 1970. Spiral Jetty is on the northeast shore of the Great Salt Lake, in the U.S. state of Utah. Smithson constructed the 4,500 457-meter (1,500-foot) jetty out of rock and earth. Its unusual shape twists in a circular, counter-clockwise direction.
obstacle or object that prevents movement.
narrow strip of land that lies along a body of water.
goods carried by a ship, plane, or other vehicle.
outer boundary of a shore.
hard building material made from mixing cement with rock and water.
circular motion to the left.
steady, predictable flow of fluid within a larger body of that fluid.
to bring and secure a ship or boat to a space or facility.
soil or dirt.
act in which earth is worn away, often by water, wind, or ice.
part of a body of water deep enough for ships to dock.
chemical element with the symbol Fe.
structure protecting a harbor or inlet from a larger body of water.
body of water surrounded by land.
platform built from the shore and extending over water.
to restore or make better.
large stream of flowing fresh water.
(1938-1973) American artist.
solid material transported and deposited by water, ice, and wind.
small sediment particles.
(1970) earth and rock sculpture along the shore of the Great Salt Lake in the U.S. state of Utah.
piece of rock.
person who travels for pleasure.