sargassum seaweed washed up in large quantities on the beaches

amount atlantic beach berrylike bladders brought brown canarias canaries canary canteras common confital currents distributed float freefloating gasfilled gran gulf gulfweed holdfast islands large las lentil macroalgae narrowleaf natans ocean palmas pelagic photosynthesis planktonic quantity rough sargasso sargassum sea seaweed shallow spain spiny storm temperate thrown tropical water waved weather weed