subaqueous
Pronunciation:
/sɐˈbæekwi.əs//sɐˈbæekwi.ɘs//sʌˈbeɪkwi.əs/adjective
Definitions
Existing below the water surface.
Example: subaqueous deposits
Designed for underwater use.
Example: a subaqueous helmet
Weak and filtered
Example: subaqueous light