Pelagic Zone
원양대
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<speciesfyi-glossary slug="pelagic-zone"></speciesfyi-glossary>Definition
The open water column of the ocean, extending from the surface to just above the seafloor.
Detailed Explanation
The pelagic zone is subdivided vertically into epipelagic (0-200 m, sunlit), mesopelagic (200-1,000 m, twilight), bathypelagic (1,000-4,000 m), abyssopelagic (4,000-6,000 m), and hadopelagic (>6,000 m). Many mesopelagic organisms perform diel vertical migrations — ascending to feed at night and descending during the day. This migration transports carbon from surface to deep water, playing a crucial role in the global carbon cycle.