Table of Contents (click to expand)The Idea Of SleepSleep With Their Eyes OpenThe Way Fish Sleep Fish sleep with their eyes open, unlike humans who sleep with them closed. There are a number of factors that can be looked at to determine a fish’s sleep. These include prolonged inactivity, a particular resting posture, alternation with activity in 24 hours and high arousal thresholds. Sleep constitutes a major portion of our lives – more than we’d like to admit! In fact, if statistics are to be believed, it is seen that an average human being sleeps for almost one-third of their entire … Continue reading How Do Fish Sleep Without Closing Their Eyes?