ishi-iruka means "Dall's Porpoise" in English.

ishi-iruka written with kanji is いし海豚.
These are jouyou kanji 常用漢字, taught in junior high, chuugakkou 中学校.
ishi-iruka written with katakana is イシイルカ.
ishi-iruka written with hiragana is いしいるか.
Romaji i shi i ru ka
Kanji 海豚
Meaning Dolphin
School Level 小2,

Orthography Notes

  • iruka is a jukujikun 熟字訓 reading for 海豚 in this word. That is: those kanji are only read that way when they come together like that.

Further Reading