Gray Whale Eschrichtius robustus (Lilljeborg, 1861)
摘要
Gray whales (Fig. 1), known scientifically as Eschrichtius robustus (Lilljeborg, 1861), were widely known as Balaena gibbosa in the eighteenth century, following Dudley’s visual descriptions in 1725 (Barnes & McLeod, 1984). The species was described as a “scrag whale” being closely related to fin-back whales displaying half a dozen knobs or knuckles in its back instead of a fin, and similar to right whales in appearance and oil yield, exhibiting white baleens not suitable for splitting.