Back to Show
Changing Seas
Humpback Health
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.
Support Provided By
Unlock with PBS Passport
27:02
Scientists spend a month in the Galapagos Islands to conduct research.
Unlock with PBS Passport
26:54
The world’s largest known aggregation of whale sharks occurs just off the coast of Cancun.
Unlock with PBS Passport
29:33
Scientists work to identify and link a devastating coral disease to a human pathogen.