🤯 Did You Know (click to read)
Arctic seawater can remain liquid below 0 degrees Celsius because of its salt content.
Pacific sleeper sharks inhabit Arctic and sub-Arctic waters that approach 0 degrees Celsius, yet specialized physiological adaptations allow their tissues to function in temperatures that would immobilize most temperate fish species.
💥 Impact (click to read)
Cold water dramatically slows metabolism, but this shark’s enzyme systems and body chemistry remain operational, enabling a multi-ton predator to move through icy depths where metabolic shutdown would kill many other vertebrates.
Its cold tolerance expands its hunting range across polar seas and deep basins, illustrating how giant body size combined with biochemical adaptation can overcome thermal limits that define the boundaries of most marine life.
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