MERIS - Medium-spectral resolution, imaging spectrometer ESA - European Space Agency ESA, ID number: SEMDFX9WYNF
A patch of Sargassum - free-floating seaweed often referred to in nautical lore for entangling ships - captured on 4 September 2008 by Envisat's MERIS instrument off the eastern coast of the United States in the North Atlantic. The patch is centred at 35¦45'N and 66¦21'W and is about 45 km across.