For marine invertebrate, in particular, endogenous clock has been known to control semilunar rhythms of locomotor, reproductive and molting behaviors.

• 有些生物的行为如移动、生殖或者蜕皮，会展现半月周期的现象，并由内生性时钟所控制，特别是常见于海洋无脊椎生物。