sessile aquatic animal forming mossy colonies of small polyps each having a curved or circular ridge bearing tentacles; attach to stones or seaweed and reproduce by budding 同义词：polyzoan, sea mat, sea moss, moss animal,
例句与用法
1.
Protection ship bottom against fouling of settling organism such as barnacle , oyster , spirorbis , bryozoans algae within 1 - 1 . 5 years 能在1 1 . 5年内有效地防止藤壶、牡蛎、石灰虫、苔藓虫和藻类等海洋附着生物对船底的污损。
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