How Do Fish Sleep? Surprising Secrets of Aquatic Slumber

SWR3's latest short video explores the fascinating world of fish sleep, revealing surprising facts about how different species rest. Did you know fish sleep with their eyes open? The video explains how fish, lacking eyelids, adopt various strategies for rest. Some hide in protective nooks and crannies, while others drift passively in the water. The presenter notes that their metabolism slows during sleep, conserving energy. A particularly clever adaptation is shown by the parrotfish, which coats itself in slime for protection while sleeping. The video also touches upon nocturnal fish and the unique hunting strategies of the anglerfish, using its bioluminescent lure. Beyond fish, the video briefly explains the unique sleep patterns of dolphins and whales, highlighting the unihemispheric sleep of dolphins, where one brain hemisphere remains active while the other rests. This unique approach to sleep allows for constant vigilance while still allowing for rest. The video is a testament to the diversity and ingenuity of the animal kingdom.

SWR3

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