short-finned pilot whale

...There are two species currently living. In Japan, the species that have traditionally been called the "Ma-pilot whale," "Naisagoto," "Shiogoto," and "Tappanaga" are all short-finned pilot whales ( G. macrorhynchus ) (illustration). They are named after their large, drum-like heads.

*Some of the terminology that refers to "short-finned pilot whale" is listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

…現生は2種。日本で昔からマゴンドウあるいはナイサゴトウ，シオゴトウ，タッパナガなどと呼ばれた種類はすべてコビレゴンドウG.macrorhynchus(英名short‐finned pilot whale)（イラスト）である。頭部が大きく太鼓のようなので，この名がある。…

※「short-finned pilot whale」について言及している用語解説の一部を掲載しています。

出典｜株式会社平凡社世界大百科事典 第２版について | 情報