We walk the beach with the handheld antennas using one, or several surveyors, depending on the size of the beach that we need to cover. The surveyors sweep the beach in a linear pattern between mean low water spring (MLWS) and the mean high water spring (MHWS). Sometimes the back of the beach will also be surveyed if there has been a particularly strong storm event.
The equipment will make an audible noise when a tag has been detected and will automatically log the tag number together with the GPS location. This means that we do not need to stop and obtain a visual identification of the pebble.
Two of our surveyors out on
survey on Hayling Island