sargassum inundation in the beach, close up and details of brown algae accumulating on the sea shore in terre de bas, les saintes

sargassum brown macroalgae seaweed sea desirade algae guadeloupe caribbean island french west indies ecology environment sargasso shore coast terre bas les saintes mats inundation floating tropics ocean toxicity harmful blooms coastal ecosystem tourism damage fertilizer environmental tourist industry problem close details weed waves beach accumulating