Jetty
Videos
A jetty is a man-made structure that protrudes from land out into water. A jetty may serve as a breakwater, as a walkway, or both; or, in pairs, as a means of constricting a channel. The term derives
Aerial view of a jetty at Swakopmund, Namibia (2017)
North Jetty on the left and South Jetty on the right at the mouth of Sebastian Inlet in Florida from the Indian River to the Atlantic Ocean.
Aerial view of jetties, constructed of dolosse, at Humboldt Bay harbor entrance. These jetties mitigate unpredictable shifting sands.
Private jetties near the mouth of the Nambucca River, New South Wales, Australia
Groyne
Videos
A groyne or groin is a rigid aquatic structure built perpendicularly from an ocean shore or a river bank, interrupting water flow and limiting the movement of sediment. It is usually made out of wood,
Jetty
…Dock Groyne Jettied floors in medieval houses…
Groynes in Sitges, Catalonia, Spain
Rock groyne at Sea Bright Beach, New Jersey.
Wooden groyne, Mundesley, UK
Lumberville Wing Dam on the Delaware River at Bulls Island, New Jersey. Some water is pouring over the wing dams or groins; there is a navigation channel between them.