Relating to or describing organisms that live both on the ocean floor and in the water column above it, or that move between these zones.
From Greek benthos 'sea bottom' + pelagic 'of the open sea.' This technical term combines both environments to describe creatures that inhabit the boundary zone between bottom and water column.
Benthopelagic fish blur the line between two worlds—they might hunt on the seafloor at night but rise into the open water during the day, making epic vertical migrations of thousands of feet.
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