Where does “aquabics” come from?

aquabics (English) comes from Japanese アクアビクス, from English [[aqua-]] + [[aerobics]].

aquabics (English): Synonym of water aerobics

Definitions

Step	Language	Word	Meaning
1	Japanese	アクアビクス	aquabics
2	English	[[aqua-]] + [[aerobics]]	—

aquabics — Etymology, Origin & Word History | Etymology Explorer