How do you say "dolphin" in Japanese?

In Japanese, "dolphin" is イルカ (iruka). It is a noun pronounced "ee-roo-kah".

Listen to the pronunciation:

Illustration of dolphin from Noun Town

Pronunciation

イルカ is written in katakana. Romanised as iruka, it sounds roughly like "ee-roo-kah" to an English ear.

Example sentence

子供たちはイルカを見て喜んでいます。

Kodomotachi wa Iruka wo mite yorokondeimasu.

The children are delighted to see the dolphin.

Usage notes

Iruka (イルカ) is the Japanese word for dolphin. Animal vocabulary is engaging for learners and appears frequently in games, zoos, farms, and nature programs.

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Questions about イルカ

How do you pronounce イルカ?

イルカ is romanised as iruka. Say it roughly like "ee-roo-kah" in English. Each Japanese syllable has even weight, so keep the rhythm steady.

Is イルカ formal or casual?

イルカ is a neutral, everyday word that works in both casual and polite speech. The level of formality comes from the sentence structure around it, not from the word itself.

How is イルカ written in Japanese?

イルカ is written using katakana. Katakana is typically used for words of foreign origin or to give emphasis.

This word is part of the vocabulary taught in the Japanese language learning game Noun Town, where words are introduced through play rather than memorisation.