YOU SAID:

im going down to the water and swim

INTO JAPANESE

私は水に下りて泳ぐ

BACK INTO ENGLISH

I swim in the water

INTO JAPANESE

水中で泳ぐ

BACK INTO ENGLISH

Swim underwater

INTO JAPANESE

水の下で泳ぎます

BACK INTO ENGLISH

Swim under water

INTO JAPANESE

水中

BACK INTO ENGLISH

Water

INTO JAPANESE

水

BACK INTO ENGLISH

Water