Greenland Sharks Maintain Activity in Perpetual Deep Sea Darkness

This predator hunts where sunlight never reaches.

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Deep ocean zones below 1,000 meters receive virtually no sunlight.

At depths exceeding 2,000 meters and during polar night, Greenland sharks function in environments devoid of natural light, relying on non-visual sensory systems.

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In total darkness where photosynthesis cannot occur and temperatures hover near freezing, they remain one of the largest active vertebrate predators.

Their dominance in lightless habitats demonstrates how deep sea giants overcome sensory limitations that would disable visually dependent hunters.

Source

Proceedings of the Royal Society B

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