Tetrapods at Ventnor
Introduction
The photograph on this page of Tetrapods at Ventnor by Martin Speck as part of the Geograph project.
The Geograph project started in 2005 with the aim of publishing, organising and preserving representative images for every square kilometre of Great Britain, Ireland and the Isle of Man.
There are currently over 7.5m images from over 14,400 individuals and you can help contribute to the project by visiting https://www.geograph.org.uk

Image: © Martin Speck Taken: 24 Sep 2016
Tetrahedral concrete structures known as tetrapods were developed in 1950 by Pierre Danel of Laboratoire Dauphinois d'Hydraulique as an solution to the problem of conventional rock armour, which can become dislodged over time. The arms of the tetrapods are designed to interlock, providing a more stable form of sea defence.