subaquatic vs submersed

subaquatic and submersed both are adjectives.

Word	Noun	Adjective	Verb	Adverb
subaquatic	No	Yes	No	No
submersed	No	Yes	No	No

As adjectives, subaquatic and submersed are synonyms defined as:

Other synonyms of subaquatic include subaqueous, submerged, underwater.

subaquatic (adjective)	submersed (adjective)
partially aquatic; living or growing partly on land and partly in water	beneath the surface of the water
growing or remaining under water	growing or remaining under water