Sperm Whales Sleep Standing Up — Scientists Just Discovered Their Trick

  • تاريخ النشر: منذ يومين زمن القراءة: دقيقة قراءة

Researchers found whales use precise bubble release to stay upright while resting underwater.

The Vertical Behaviour Was First Documented in 2008

Researchers Tagged 42 Whales in Norway

Seventeen Whales Were Recorded Resting

They Used Three Different Routes Into Rest

Their Heads Naturally Pull Them Upward

Each Bubble Reduces Their Upward Pull

Bubbles Appeared During Almost Every Rest Period

They May Prepare Before the Resting Dive

The Bubbles May Perform a Second Function

Scientists Still Cannot Confirm the Exact Sleep State

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Floating upright beneath the waves looks effortless, but remaining almost motionless underwater creates a difficult physical problem. Any small change in depth can alter the forces acting on a resting body.

Researchers have now identified the mechanism behind this extraordinary balance. Their recordings reveal an unexpectedly precise behaviour that may serve more than one biological purpose.

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