Did you know dolphins sleep with one eye open? Dolphins are always partly conscious when they sleep to keep from drowning. They keep one eye open at all times to watch for predators.
If they ever do fall sleep with both eyes shut, it's not on porpoise.
Clipart courtesy of Free-Clipart-Pictures.net
If they ever do fall sleep with both eyes shut, it's not on porpoise.
Clipart courtesy of Free-Clipart-Pictures.net
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