Plankton

['plæŋ(k)t(ə)n;-tɒn] or ['plæŋktən]

解释:

(noun.) the aggregate of small plant and animal organisms that float or drift in great numbers in fresh or salt water.

达伦编辑--From WordNet

解释:

n. pelagic animals collectively.

编辑:卡蒂