14 ฤดูกาล
56 ตอน
Changing Seas - Season 14 Episode 2
How does the body size and overall health of humpback whales change across their migratory cycle? A team of researchers studying the animals, which spend part of the year feeding in Alaska and a few months fasting while in their Hawaiian breeding grounds, is making remarkable discoveries.
- ประเทศ : United States of America
- ประเภท : Documentary
- ผู้อำนวยการ :
- นักแสดง : Craig Sechler
