水螅在洁净缓流富水草的小河渠或小池塘中生活,附着在水生植物或其他物体上,以小的甲壳类为食。在自然环境中,水螅的数量一般较少。以水螅为材料开展研究和实验,必须首先进行采集和人工培养。采集在清洁的水域中,于岸边水浅处水草丰盛的地方常有水螅分布。在不扰动水域环境,晴天光线良好时,仔细寻觅,可看到附着在水草上完全伸展的淡褐色 Muddy water lives in small streams or small ponds of clean, gentle, water-rich grass, attached to aquatic plants or other objects and fed on small crustaceans. In natural environment, the amount of water is generally less. Water 螅 as a material for research and experiments, we must first acquisition and artificial cultivation. Gathering in clean waters, there is often water 螅 distribution in the abundant watery plants on the shore. Do not disturb the water environment in the sunny day when the light is good, looking carefully, you can see attached to the drape fully extended light brown