Penguins and seals became an important alternative as whale populations waned at the end of the 19th century. https://en.m.wikipedia.org/wiki/Joseph_Hatch http

Penguins and seals became an important alternative as whale populations waned at the end of the 19th century. https://en.m.wikipedia.org/wiki/Joseph_Hatch https://en.m.wikipedia.org/wiki/Joseph_Hatch