Sargassum muticum stranded

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Description: English: Japweed, or Japanese Wireweed (Sargassum muticum) stranded on the shore. This species is highly invasive: it remains alive after being detached from rocks (for instance after a storm), and may reattach itself somewhere else after being carried away by water currents. Picture taken on Baleal, Peniche, Portugal. Date: 3 July 2009. Source: uploaded with the author's permission. Author: Graça Gaspar. Permission(Reusing this file): uploaded with the author's permission.