How to Say “Ocean” in Hiragana (Japanese)

うみ
umieveryday
Ocean in hiragana is うみ (umi), the everyday word for both sea and ocean. More technical words are かいよう (kaiyō) and たいよう (taiyō), found in science and geography.
Meaning: ocean or sea (noun)

Ways to say it

“ocean” in Japanese
Japanese Romanization Note
うみ umi everyday
かいよう kaiyō formal
たいよう taiyō scientific

The Pacific Ocean is たいへいよう (Taiheiyō) and the Atlantic is たいせいよう (Taiseiyō).

Which one should you use?

Japanese uses うみ for sea, ocean and the seaside alike. The word たいよう for large ocean sounds the same as 太陽, the sun, so context tells them apart.

Did you know?

  • Marine Day, うみのひ (Umi no Hi), is a national holiday in Japan held in July.

Examples in context

  • うみがだいすきです。
    Umi ga daisuki desu.
    I love the ocean.
  • たいへいようはとてもひろいです。
    Taiheiyō wa totemo hiroi desu.
    The Pacific Ocean is very wide.

Example conversation

Sayaka and her father, Dad, walk on a beach.

  1. Sayaka

    おとうさん、うみだよ。
    Otōsan, umi da yo.
    Dad, it is the ocean.
  2. Dad

    きれいだね。
    Kirei da ne.
    It is beautiful.
  3. Sayaka

    およぎたいな。
    Oyogitai na.
    I want to swim.
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Mitchell Edgar
Mitchell EdgarHelp make this guide better. Spot a mistake, know another way to say it, or have an example from real life? Share it below.
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