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These Rare Deep-Sea Creatures Are the Stuff of Nightmares

Far below the ocean’s surface, where sunlight disappears and pressure reaches crushing levels, some of the planet’s strangest ...
NPR

Why some species in the deep sea get bigger, while some species get smaller

Thousands of meters below the ocean's surface lurk some gigantic creatures, much larger than their shallow-water brethren. Scientists have a few hunches for why this happens, but the debate continues.