benthal

/ˈbɛnθəl/
adjective
  1. Relating to the deepest part of a body of water, such as the bottom of the ocean or a lake.
    • The benthal layer of the lake is home to unique bacteria.
    • Scientists study benthal zones to understand deep-sea ecosystems.
    • Benthal organisms are adapted to high pressure and low light.
Antonyms
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