Two fronds of <i><a href="//commons.wikimedia.org/wiki/Laminaria_digitata" title="Laminaria digitata">Laminaria digitata</a></i> washed up on the foreshore of Anglesey, Wales, UK; background is mostly <i><a href="//commons.wikimedia.org/wiki/Ascophyllum_nodosum" title="Ascophyllum nodosum">Ascophyllum nodosum</a></i>. Total length of fronds is <i>c.</i> 8 ft (2.4 m).
<a href="//commons.wikimedia.org/wiki/User:Stemonitis" title="User:Stemonitis">Stemonitis</a>
CC BY 2.5
Stitched panorama of three digital photographs (all my own work)