6 ฤดูกาล
246 ตอน
Eons - Season 6 Episode 53
Mystacodon is the earliest known mysticete, the group that, today, we call the baleen whales. But if this was a baleen whale, where was its baleen? Where did baleen come from? And how did it live without it?
- ประเทศ : United States of America
- ประเภท : Documentary
- ผู้อำนวยการ : Hank Green
- นักแสดง : Kallie Moore, Blake de Pastino, Michelle Barboza-Ramirez