kama-iruka means "Pacific White-Sided Dolphin" in English.

kama-iruka written with kanji is 鎌海豚.
These are jouyou kanji 常用漢字, taught in junior high, chuugakkou 中学校.
kama-iruka written with katakana is カマイルカ.
kama-iruka written with hiragana is かまいるか.
Romaji ka ma i ru ka
Kanji 海豚
Meaning Scythe 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

Wikipedia: カマイルカ