Robert Thompson / Knotted wrack {Ascophyllum nodosum} and Sea lettuce {Ulva intestinalis} exposed at low tide, Ballyhenry Point, Strangford Lough, County Down, Northern Ireland, UK, August
Nick Upton / Epiphytic red alga (Polysiphonia lanosa) growing in tufts on Knotted wrack (Ascophyllum nodosum) on a rocky shore, Wembury, Devon, UK, August.
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Nick Upton / Epiphytic red alga (Polysiphonia lanosa) growing in tufts on Knotted wrack (Ascophyllum nodosum) on a rocky shore, Wembury, Devon, UK, August.
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Nick Upton / Epiphytic red alga (Polysiphonia lanosa) growing in tufts on Knotted wrack (Ascophyllum nodosum) on a rocky shore, with the tide rising in the background, Wembury, Devon, UK, August.
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Nick Upton / Epiphytic red alga (Polysiphonia lanosa) growing in tufts on Knotted wrack (Ascophyllum nodosum) on a rocky shore, Wembury, Devon, UK, August.