YOU SAID:

I watch them float around inside their tank

INTO JAPANESE

私は彼らが水槽の中で浮かんでいるのを眺めています

BACK INTO ENGLISH

I watch them floating in the tank

INTO JAPANESE

水槽に浮かんでいるのを眺めています

BACK INTO ENGLISH

watching them floating in the aquarium

INTO JAPANESE

水槽に浮かんでいるのを眺めていると

BACK INTO ENGLISH

As I watched them floating in the aquarium

INTO JAPANESE

水槽に浮かんでいるのを眺めていると、

BACK INTO ENGLISH

As I watched them floating in the aquarium,

INTO JAPANESE

水槽に浮かんでいる彼らを眺めていると、

BACK INTO ENGLISH

As I watched them floating in the aquarium,