Abyssal Zone
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<speciesfyi-glossary slug="abyssal-zone"></speciesfyi-glossary>Definition
The deep ocean zone from 4,000 to 6,000 meters depth, characterized by near-freezing temperatures and total darkness.
Detailed Explanation
Despite the crushing pressure, sub-zero temperatures, and perpetual darkness, the abyssal zone supports diverse life adapted to extreme conditions. Food is scarce — organisms depend on marine snow and occasional falls of whale carcasses (whale falls), which can sustain communities for decades. Deep-sea mining for manganese nodules threatens abyssal ecosystems that recover over millennia. Much of the abyssal ocean remains unexplored.