the.com/depths

where light quits and the strange things start showing off.

means The deep parts of something — water, space, despair, or thought — measured downward or inward from the surface.

from From Old English 'deop' (deep), with the noun 'depth' built the same way 'length' grows from 'long' and 'breadth' from 'broad' — that '-th' suffix marks a quality made measurable. 'Depths' is simply the plural, and it leans naturally toward the figurative: the depths of the ocean, of winter, of one's heart. The root traces back to a Proto-Germanic source shared with Dutch 'diep' and German 'tief.'

no light
sunlight vanishes below 1000 meters down
crushing
pressure can flatten steel submarines
glowing life
most deep-sea creatures make their own light
unmapped
more ocean floor unseen than Mars surface
slow time
some deep clams live over 500 years
for instance

mariana trench — deepest ocean trench at 10,994 meters, challenger deep, western pacific

kola superdeep borehole — deepest manmade hole, 12,262 meters deep, kola peninsula russia, drilled 1970-1989

dead sea — lowest point on earth's surface at 430.5 meters below sea level, israel-palestine border

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