How do you say sea in Japanese?
— 海 (うみ, úmi); 海 (かい, kai); 海

Related synonyms for sea in Japanese
ocean大洋 (たいよう, taiyō); 海洋 (かいよう, kaiyō); 海 (うみ, umi)
Terms within for sea in Japanese
bay湾 (わん, wan)
Generic synonyms for sea in Japanese
water水 (みず, mizú)