YOU SAID:

I am a seal with sponges for arms.

INTO JAPANESE

私は腕にスポンジをつけた印鑑です。

BACK INTO ENGLISH

I am a seal with a sponge on my arm.

INTO JAPANESE

私は腕にスポンジが付いた印鑑です。

BACK INTO ENGLISH

I am a seal with a sponge on my arm.