As the biggest animal ever to have lived, the blue whale (Balaenoptera musculus) seemingly obliterates any other animal's chances at the length title.
2
"Those animals are only members of the genus Balaenoptera furnished with dorsal fins, and like sperm whales, they're generally smaller than the bowhead whale."
Ús de genus Balaenoptera en anglès
1
"Those animals are only members of the genusBalaenoptera furnished with dorsal fins, and like sperm whales, they're generally smaller than the bowhead whale."