这些无法归类的动物包括被称为奇虾的会游泳的大型食肉动物，以及叫做威瓦亚虫的软体动物，它们以岩屑和藻类为食。
These unassignable animals include a large swimming predator called Anomalocaris and a soft-bodied animal called Wiwaxia, which ate detritus or algae.
鱼类吃海胆，海胆以小块的藻类为食。
不借助显微镜的话几乎看不见，轮虫以藻类为食而轮虫又是鱼宝宝们的主食。
Barely visible without a microscope, rotifers eat algae and serve primarily as food for baby fish.
不借助显微镜的话几乎看不见，轮虫以藻类为食而轮虫又是鱼宝宝们的主食。
Barely visible without a microscope, rotifers eat algae and serve primarily as food for baby fish.
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