noun
Hector's dolphin
A small dolphin species endemic to New Zealand waters; the Japanese name is a direct loan adaptation.
セッパリイルカはニュージーランド近海にしか生息していない。
Hector's dolphins live only in the waters around New Zealand.
The Japanese name セッパリイルカ is a phonetic adaptation of the English 'Hector's dolphin', combined with イルカ (dolphin). The kanji 背張海豚 is an ateji rendering.