lugworm (arenicola marina) casts in the sand on camasunary bay isle of skye scotland uk

animal arenicola bay beach burrow burrows camasunary cast casts close coast coastal coastline coiled cuillin environment europe habitat hebrides hills intertidal isle isles landscape low lugworm marina marine mini mounds mountains mud mudflats nature north northern ocean oceanic sand sandworm sandy scenic scotland scottish sea skye summer tidal tide western wildlife worm