YOU SAID:

she saw seashell on the seashore

INTO JAPANESE

彼女は海岸に貝殻を見た

BACK INTO ENGLISH

She looked at the seasheon on the coast

INTO JAPANESE

彼女は海岸の海岸を見た

BACK INTO ENGLISH

She looked at the coastal coast

INTO JAPANESE

彼女は沿岸の海岸を見た

BACK INTO ENGLISH

She looked at the coastal coast