Do sharks ever really sleep?



  1. 0 Votes

    Some sharks are able to sleep while others aren’t really able to. Because they have to swim in order for the oxygen in the water to flow through the gills, movement is usually necessary for them to breathe. However, some sharks (such as the nurse shark) have spiracles that force water across their gills while stationary. This allows periods of rest, which is “sleep”.

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