1. The acanthaster is known for its bright colors and long spines.
冠刺星以其鲜艳的颜色和长长的刺而闻名。
2. The coral reefs in this area have been heavily damaged by outbreaks of acanthaster.
这个地区的珊瑚礁受到了冠刺星暴发的严重破坏。