YOU SAID:
Hello iam under the water
INTO JAPANESE
こんにちは、私は水の下にいます
BACK INTO ENGLISH
hello i'm under water
INTO JAPANESE
こんにちは、私は水の中です
BACK INTO ENGLISH
hello i'm in the water
INTO JAPANESE
こんにちは、私は水の中です
BACK INTO ENGLISH
hello i'm in the water
That didn't even make that much sense in English.