thanks for the pics of the groynes,,FYI u made one big false statement GROYNES do work and have never failed they have been used for about 200 years now ,they are the best and cheapest meathod ,dunes on the other hand I belive are the worst .....thanks
AT 0:39 the video showed that the breakwaters are the ideal long term solution which create ideal beaches while completely stopping erosion ... The video evidence is proof that they work... Then the video ignores this solution ... I recommend to take note of that. ....