Shark Tales
A story on the NPR program All Things Considered (May 11, 2023) told of research that reveals something new about Scalloped Hammerhead Sharks. It seems they close off their gills when diving deep in freezing cold water to keep their insides from icing up. In essence, they hold their breath.
The Shark
I envy the shark, gliding fast, propelled through water
with barely a twitch—cool, so cool, with that thousand yard
stare, never blinking back tears or winking in jest,
backing down dolphins, even killer whales,
“You want a piece o’ me?
You want a piece o’ me?”
You never hear a shark gasp in surprise or cough in confusion
or sigh with satisfaction. Instead of lungs he lets gills do the job
of oxygen extraction while he slices the ocean
like a Ginsu knife going deeper, and even deeper still
until water ices the heart.
Scientists say they’ve found a shark that’s mastered the trick
of closing off gills when the water’s too cold
to protect the organs that mean the most like the brain and
maybe the spleen. In the silent dark, in the loneliest hole, the shark
lets down his macho defenses saying aloud to nobody there,
“It only hurts when I breathe.”
- DMC, 2023
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