Perchance to Dream?
"...a pod of six whales were spotted by Scottish scientists along the coast of northern Chile, floating motionlessly just below the surface, clearly with both eyes closed, displaying REM and being non-responsive to their presence. According to the scientists this might prove that whales do in fact experience sleep like other mammals do, with both sides of the brain. And quite possibly even being capable of dreaming."
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World Winding Down: Sleeping Whales