fairy shrimp
noun
1- a small transparent crustacean which typically swims on its back, using its legs to filter food particles from the water仙女虾, 丰年虫。
1.1
- Order Anostraca, class Branchiopoda: many species, including brine shrimps.无甲目, 鳃足亚纲：多种, 包括海水丰年虫。