YOU SAID:
She sells seas shells by the sea shore.
INTO JAPANESE
彼女は海辺で海の貝殻を売っている。
BACK INTO ENGLISH
She sells sea shells by the sea.
INTO JAPANESE
彼女は海辺で海の貝殻を売っている。
BACK INTO ENGLISH
She sells sea shells by the sea.
That didn't even make that much sense in English.