海洋生物是神秘而迷人的种群。不仅普通人对它们知之甚少,就连海洋生物学家也不能了解其中的奥秘。海洋多毛纲就是这样的一类。生活在海边的人可能对沙蚕这种动物很熟悉,它就属于环节动物门中的多毛纲,又名海蜈蚣、水百脚等等。除沙蚕外,海洋中还有各种各样的其他的多毛纲环节 Marine life is a mysterious and fascinating population. Not only do ordinary people know little about them, even marine biologists cannot understand the mysteries. Marine polychaeta is such a category. People living on the beach may be familiar with the animals such as the silkworm, which belongs to the polychaeta in the annelids, also known as the sea slug, water and more. In addition to sandy silkworms, there are a variety of other polychaeta links in the ocean.