YOU SAID:
the frog merrily dances in the water on the pond leaves
INTO JAPANESE
カエルは池の葉の上で水中で楽しそうに踊る
BACK INTO ENGLISH
The frog happily dances in the water on the leaves of the pond
INTO JAPANESE
カエルは池の葉の上で楽しそうに水中で踊ります
BACK INTO ENGLISH
The frog happily dances underwater on the leaves of the pond
INTO JAPANESE
カエルは水中で池の葉の上で楽しそうに踊る
BACK INTO ENGLISH
The frog happily dances underwater on the leaves of the pond
That didn't even make that much sense in English.