Whale Blubber Shields Baird’s Beaked Whale in Near-Freezing Abyssal Waters

It hunts for hours in water barely above freezing.

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Blubber also functions as an energy reserve during periods of reduced feeding.

Baird’s beaked whales maintain core body temperature in deep waters hovering near 0°C through thick insulating blubber and metabolic heat production.

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Extended dives into frigid depths would rapidly induce hypothermia in unprotected mammals, yet this species sustains prolonged foraging sessions without losing thermal stability.

Its thermal resilience demonstrates how marine mammal physiology has expanded into environmental extremes once thought incompatible with large warm-blooded life.

Source

NOAA Fisheries

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