Adjective subaquatic has 2 senses
  1. subaqueous, subaquatic, submerged, submersed, underwater - growing or remaining under water; "viewing subaqueous fauna from a glass-bottomed boat"; "submerged leaves"
    Antonyms: terrestrial, land (indirect, via amphibious, aquatic)
    Antonym: amphibious (indirect, via aquatic, terrestrial)
  2. semiaquatic, subaquatic - partially aquatic; living or growing partly on land and partly in water; "a marginal subaquatic flora"
    Antonyms: terrestrial, land (indirect, via amphibious, aquatic)
    Antonym: amphibious (indirect, via aquatic, terrestrial)
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