探索太平洋深海热液喷口如何改写生命规则
Forty years ago, if you had told a biologist that entire communities of animals thrive in total darkness at pressures that would crush a submarine, they would have laughed. But in 1977, scientists exploring the Galápagos Rift stumbled upon a world that shattered every assumption. Around hydrothermal vents—cracks in the ocean floor spewing superheated, mineral-rich water—they found ecosystems that run on chemistry, not sunlight.
These vents, found along mid-ocean ridges like the Juan de Fuca Ridge off the coast of Washington State, host bizarre creatures such as giant tubeworms, blind crabs, and heat-loving microbes. The key players are chemosynthetic bacteria that convert hydrogen sulfide into energy. Clustered around the vents, these bacteria form the base of a food web that simply ignores the sun. Water temperatures can exceed 400°C, yet life flourishes in the gradient between boiling vent fluid and near-freezing seawater.
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