In addition, the sediments also transport into the North Branch from the adjoining sea area.

北支河口外的沉积物，存在着向河口内输运的趋势。

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More sea urchins and other tiny shellfish have been swept ashore at adjoining Broad Haven and Little Haven beaches in St Brides Bay, Pembrokeshire and in some places the golden sands were inches deep in empty shells.

BBC: News | Wales | Sea urchins may have committed suicide