A very specialized feeding adaptation in zooplankton is that of the tadpolelike appendicularian who lives in a walnut-sized (or smaller) balloon of mucus equipped with filters that capture and concentrate phytoplankton.
浮游動物體內一種極特殊的進食適應性變化是蝌蚪狀的尾海鞘綱動物(appendicularian)的那種適應性變化，而尾海鞘綱動物則存活于核桃大小(或更小)的黏液球囊內，裝備有過濾器，用以捕捉和集中浮游植物。