Abyssal zone

/əˈbɪs.l̩ zəʊn/ noun

noun ·Rare ·Advanced level

Definitions

Noun
  1. 1
    The oceanic realm consisting of the deep ocean, typified by a dearth of plant life, and plentiful carnivorous animals that are able to withstand extreme pressure.
  2. 2
    the deep sea (2000 meters or more) where there is no light wordnet