冷つめたいけど、ちょっとだけ水みずにもぐるね。

tsumetai kedo, chotto dake mizu ni moguru ne.

It's cold, but I'll just dive under the water for a bit. casual

弟おとうとはプールの底そこまで深ふかくもぐりました。

otouto wa puuru no soko made fukaku mogurimashita.

My little brother dove deep down to the bottom of the pool. neutral