YOU SAID:

a sailor went to sea sea sea to see what he could see see see but all that he could see see see was the bottom of the deep blue sea sea

INTO JAPANESE

船乗りが海の海に行って、彼が見ることができるものを見るために見ましたが、彼が見ることができるのは、深い青い海の海の底だけでした

BACK INTO ENGLISH

The sailor went to the sea of the sea and saw to see what he could see, but all he could see was the bottom of the deep blue sea

INTO JAPANESE

船乗りは海の海に行って、彼が見ることができるものを見るために見ましたが、彼が見ることができたのは深い青色の海の底だけでした

BACK INTO ENGLISH

The sailor went to the sea of the sea and saw to see what he could see, but all he could see was the bottom of the deep blue sea