YOU SAID:
She sold sea shells by the sea shore.
INTO JAPANESE
彼女は海岸でシェル海を販売しました。
BACK INTO ENGLISH
She sold sea shells on the shore.
INTO JAPANESE
彼女は海岸でシェル海を販売しました。
BACK INTO ENGLISH
She sold sea shells on the shore.
That didn't even make that much sense in English.