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Whales in a Plastic Ocean

Far out in the eastern Atlantic, the Portuguese island of Madeira rises from the depths of the open ocean. Despite its remote location, the archipelago is impacted by floating plastic trash. Researchers with MARE-Madeira study the effects plastics, and their chemical compounds, have on the health of marine mammals that frequent local waters.
Season 17 Episode 1702 Length 26:46 Premiere: 11/01/25

Changing Seas

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Clips & Previews

Season 17 Episodes

The Elephant Seals of Año Nuevo
S17 E1704 Length 26:42 Premiere Date 11/01/25

Mystery of the Spinning Fish
S17 E1703 Length 26:42 Premiere Date 11/01/25

Whales in a Plastic Ocean
S17 E1702 Length 26:46 Premiere Date 11/01/25

Costa Rica's Surfing Paradise
S17 E1701 Length 26:46 Premiere Date 11/01/25

Costa Rica's Surfing Paradise | Changing Seas | Preview
Preview Length 04:54 Premiere Date 06/24/25

Whales in a Plastic Ocean | Changing Seas | Preview
Preview Length 02:59 Premiere Date 06/24/25

Mystery of the Spinning Fish | Changing Seas | Preview
Preview Length 04:11 Premiere Date 06/24/25

The Elephant Seals of Año Nuevo | Changing Seas | Preview
Preview Length 04:43 Premiere Date 06/24/25

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Eagle Rays: Soaring on Spotted Wings - S16 E2

Despite its global "endangered" status, little is known about the white-spotted eagle ray. Now, Florida scientists are employing cutting-edge technology and innovative approaches to gain deeper insight into this elegant fish's movement and diet.

  • Thursday October 22, 2026 8:30 am ET on KET2
  • Thursday October 22, 2026 7:30 am CT on KET2

Maui Aloha 'aina: From Mauka to Makai - S16 E3

Dedicated scientists and volunteers are drawing upon the ancient wisdom of the Hawaiian people to restore Maui's ecosystems following the losses caused by recent Lahaina wildfires.

  • Thursday October 29, 2026 8:30 am ET on KET2
  • Thursday October 29, 2026 7:30 am CT on KET2

Costa Rica's Surfing Paradise - S17 E1

A coastal community unites to protect their surf break, restore vital habitats and safeguard nesting sea turtles in Costa Rica's Playa Hermosa.

  • Thursday November 5, 2026 8:30 am ET on KET2
  • Thursday November 5, 2026 7:30 am CT on KET2

Puerto Rico: Resilience in Action - S18 E1

Puerto Rico's fishing communities restore fisheries, protect endangered species and build climate resilience through collaboration.

  • Thursday November 12, 2026 8:30 am ET on KET2
  • Thursday November 12, 2026 7:30 am CT on KET2

The Seals of Sable Island - S18 E2

Researchers investigate how iron transferred from mom to pup during lactation influences a gray seal pup's survival in Canada's Sable Island.

  • Thursday November 19, 2026 8:30 am ET on KET2
  • Thursday November 19, 2026 7:30 am CT on KET2
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Ancient Adriatic: Croatia's Sunken History - S16 E1

  • Thursday October 15, 2026 8:30 am ET on KET2
  • Thursday October 15, 2026 7:30 am CT on KET2
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