Dedicated Issues··Sunday, November 8, 2026, 7:14 PM
Seals sleep underater with a kind of auto-pilot.
Every twenty minutes, an automatic reflex brings these sleeping seals to the surface for air. Their brain acts like a biological autopilot, allowing them to breathe and sink back down without ever waking up. This aquarium time lapse shows this behavior. Seals sleep underater with a kind of auto-pilot. Every twenty minutes, an automatic reflex
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