Deep sleep: Even jellyfish need their slumber

WASHINGTON (Reuters) - Even a jellyfish - one of Earth's first and most ancient animals - needs its sleep. [Source]

Origin: reuters.com

Category: scienceNews

Topics: jellyfish, sleep, needs, animals, ancient, first, Earth's, (Reuters), WASHINGTON, slumber

Source: http://feeds.reuters.com/~r/reuters/scienceNews/~3/dchCgv18PQ8/deep-sleep-even-jellyfish-need-their-slumber-idUSKCN1BW2AM