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
26:42
Florida’s gentle giants are dying in record numbers.
Unlock with PBS Passport
26:42
Experts are working to conserve and restore the Puget Sound’s declining kelp forests.
Unlock with PBS Passport
26:42
Scientists study the body size and health of humpback whales across their migratory cycle.
26:42
Experts study declines in the number of humpbacks migrating between Alaska and Hawaiʻi.
Unlock with PBS Passport
26:47
Scientists employ creative solutions to restore and reconnect Florida’s mangroves
Unlock with PBS Passport
26:47
The deep-sea submersible Alvin brings explorers to extraordinary places.
Unlock with PBS Passport
26:42
Scientists study salt marshes along scenic coastlines in the South.
26:42
Scientists team up with anglers to study the survival rates of the fish.
Unlock with PBS Passport
26:53
Scientists study what makes certain corals more resilient than others.
Unlock with PBS Passport
26:42
Scientists monitor penguin populations and study the animals’ interaction.
Unlock with PBS Passport
26:42
Scientists study the devastating impacts of the Deepwater Horizon oil rig disaster.
Unlock with PBS Passport
26:42
Scientists set out to uncover the mysteries of blue holes.