subaquatic vs submerged

subaquatic and submerged both are adjectives.

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

As adjectives, subaquatic and submerged are synonyms defined as:

Other synonyms of subaquatic include subaqueous, submersed, underwater.

subaquatic (adjective)	submerged (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