YOU SAID:

When I was underwater, I saw many swimming pickles

INTO JAPANESE

水中にいると、たくさんの漬物が泳いでいるのを見ました。

BACK INTO ENGLISH

When I was in the water, I saw a lot of pickles swimming.

INTO JAPANESE

水中にいると、たくさんのピクルスが泳いでいるのが見えた。

BACK INTO ENGLISH

When I was in the water, I saw a lot of pickles swimming.