Any of several brownish seaweeds of the genus Sargassum of tropical Atlantic waters, having rounded air bladders and often forming dense, floating masses.

 
  • 果囊马尾藻一种马尾藻属褐色海藻,产于大西洋热带水域,有圆形气囊,常常大片聚集、飘浮在一起
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