It was an omnivorous grazer, sweeping up drifting fish, jellyfish and dead carrion as well as plants.
它是一种什么都吃的动物, 清扫漂浮的鱼, 水母, 腐肉和植物。
And the reason was because of overfishing, and the fact that a last common grazer, a sea urchin, died.
原因就是 过度捕捞 还有就是最后一个食藻生物 海胆死了
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