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Changing Seas

CHANGING SEAS takes viewers on an exciting adventure to the heart of CHANGING SEAS takes viewers on an exciting adventure to the heart of our liquid planet. The documentary series offers an unprecedented our liquid planet. The documentary series offers an unprecedented look at how oceanographers and experts study earth's vast underwater look at how oceanographers and experts study earth's vast underwater wilderness, while shedding light on how over-fishing, global climate wilderness, while shedding light on how over-fishing, global climate change and pollution threaten ocean resources. change and pollution threaten ocean resources.

Changing Seas  
  • Maug's Caldera: A Natural Laboratory A Co-Production with Open Boat Films
    Saturday, September 20
    3:30 pm on UEN-TV 9.1
    This episode takes viewers into an area of the remote Pacific, the islands of Maug. Formed by an ancient volcano, shallow hydrothermal vents are found close to coral reefs inside the submerged caldera. These vents emit levels of CO2 that can be expected in the world's oceans by the end of the century, making these waters a natural laboratory for scientists studying the impacts of ocean acidification on coral reefs.
  • Beneath The Bridge
    Saturday, September 27
    3:30 pm on UEN-TV 9.1
    The Blue Heron Bridge in Riviera Beach, Florida is known as one of the best shore dives in the United States. Even though at first it appears as an unlikely dive site, it is home to a rich variety of marine life, ranging from tiny nudibranchs to manta rays. Underwater photographers are documenting what lives beneath the bridge, and a scientist is studying how two species of octopus co-exist there.
  • The Future of Seafood
    Saturday, October 4
    3:30 pm on UEN-TV 9.1
    It is estimated there will be two billion more people on the planet by mid-century. To feed this booming world population, more fish will need to be farmed than ever before. One way to increase fish production in a sustainable way is to move aquaculture operations offshore - where there is plenty of available space and strong currents flush out the pens to avoid polluting sensitive ecosystems.
  • Toxic Algae: Complex Sources and Solutions
    Saturday, October 11
    3:30 pm on UEN-TV 9.1
    Lake Okeechobee was once the blue heart of Florida, pumping fresh water down to the Everglades and beyond. But now that a dike and canal system control its flow, water releases from the lake periodically create putrid mats of blue green algae. Scientists think water pollution is to blame, and if something isn't done about it there could be irreparable damage to the environment, the local economy and people's health.
  • The Fate of Carbon
    Saturday, October 18
    3:30 pm on UEN-TV 9.1
    For millennia, the exchange of CO2 between the oceans and atmosphere has been in balance. Now, with more anthropogenic carbon-dioxide in the atmosphere, the oceans are taking up more CO2 as well. This additional CO2 is negatively impacting sensitive ecosystems through a process called ocean acidification, and scientists worry how changes to the ocean environment will affect the way carbon is cycled through the seas.
  • Majestic Mantas
    Saturday, October 25
    3:30 pm on UEN-TV 9.1
    The remote Revillagegdo Archipelago off Mexico's Pacific coast is a hotspot for giant mantas that interact with awe-struck scuba divers. Scientists are studying the local population using photo ID techniques and acoustic tags which track the movements of these mysterious fish. They are also conducting experiments to see if the filter-feeding rays are impacted negatively by microplastics, tiny pieces of toxic trash that float in the ocean.

 

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  • Manatees: Conserving A Marine Mammal
    Saturday, September 13
    3:30 pm on UEN-TV 9.1
    Every winter, hundreds of manatees aggregate at Crystal River, Florida. This sanctuary is also a treasure for scientists, who take advantage of these manatee gatherings to study them. From decades of visual ID studies to the most cutting-edge DNA research, experts hope that science will help conserve this beloved marine mammal.
  • Sponges: Oldest Creatures in the Sea?
    Saturday, September 6
    3:30 pm on UEN-TV 9.1
    Shows how recent DNA research has cast doubt on the theory that sponges were the first animals to branch off the "Animal Tree of Life, " a kind of family tree for all living and extinct animals on earth. Recently, some scientists are suggesting that ctenophores, also known as comb jellies, are an older lineage.
  • California Sea Otters: Life on the Edge
    Saturday, August 30
    3:30 pm on UEN-TV 9.1
    Adored by many for its cuddly appearance, the threatened southern sea otter is a voracious predator that needs to eat the equivalent of 25% of its body weight a day to survive. Once nearly hunted to extinction, this endearing marine weasel has made a slow comeback on California's central coast, demonstrating its role as an ecosystem engineer in the process.
  • Maui Aloha 'aina: from Mauka to Makai
    Saturday, August 23
    3:30 pm on UEN-TV 9.1
    Dedicated scientists, land restorationists, and volunteers are drawing upon the ancient wisdom of the Hawaiian people to revive Maui's cherished ecosystems. Even amidst profound loss in the wake of recent wildfires, these resilient islanders are committed to reconnecting waterways from Mauka to Makai -from the mountains to the ocean- to heal their island home.
  • Eagle Rays: Soaring On Spotted Wings
    Saturday, August 16
    3:30 pm on UEN-TV 9.1
    Despite its designation as globally "endangered," relatively little is known about the whitespotted eagle ray's ecology and life history. Now Florida scientists are combining cutting-edge technology with creative approaches to gain deeper insights into the movement and diet of this elegant fish - allowing them to experience the world from a ray's point of view for the first time.
  • Ancient Adriatic: Croatia's Sunken History
    Saturday, August 9
    3:30 pm on UEN-TV 9.1
    Archaeologists and conservators along Croatia's Dalmatian Coast meticulously uncover and document an ancient Roman ship. Submerged in sediment for nearly 2000 years, the preserved wooden hull and recovered artifacts offer invaluable insights into the region's maritime history and cultural heritage.
  • Life in the Dark: The Polar Night
    Saturday, August 2
    3:31 pm on UEN-TV 9.1
    At the northernmost year-round research station in the world, scientists brave frigid temperatures and perpetual night to solve an ocean mystery. The team is trying to figure out how some of the tiniest animals survive at a time of year when their main food source is not available.