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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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After the Spill - S3 E4

  • Thursday June 11, 2026 8:30 am ET on KET2
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