Changing SeasSeason 142022 · 4 episodesEpisodes1Vanishing WhalesThe humpback whale population that migrates between Hawaii and Alaska is considered a conservation success story. When sightings of the animals suddenly dropped, people became concerned. Scientists in both locations are trying to understand what happened to the whales and why.2Humpback HealthHow 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.3Kelp: Hidden Treasure of the Salish SeaKelp forests have played an essential role in the Puget Sound ecosystem for thousands of years. Today, kelp is in decline. Experts work against time to conserve and restore them.4Saving Florida's Starving ManateesFlorida's iconic sea cows are dying in record numbers. Years of declining seagrass beds have eliminated one of the gentle giants' primary food sources. Now wildlife managers have taken the unprecedented step of feeding the animals, while scientists are in a race against time to restore the lost seagrass.Season 1Season 2Season 3Season 4Season 5Season 6Season 7Season 8Season 9Season 10Season 11Season 12Season 13Season 15Season 16Season 17Season 18
