YOU SAID:
The fish swam happily
INTO JAPANESE
魚が楽しそうに泳いでいた
BACK INTO ENGLISH
fish swimming happily
INTO JAPANESE
楽しそうに泳ぐ魚
BACK INTO ENGLISH
happy swimming fish
INTO JAPANESE
幸せに泳ぐ魚
BACK INTO ENGLISH
happy swimming fish
You've done this before, haven't you.