What is the Ocean Twilight Zone? Explore the mesopelagic (200–1000 m) and why it’s central to climate, fisheries, and biodiversity. Ocean Conservancy’s Chris Dorsett explains daily vertical migrations, lanternfish and vampire squid, and the biological carbon pump that shuttles carbon to the deep. We unpack emerging pressures—industrial harvest for fishmeal/fish oil, deep-sea mining plumes, and marine carbon-removal trials—and how science-based policy can safeguard this ecosystem before impacts stack up. Clear, accessible ocean science plus practical context on precautionary management make this a go-to primer for anyone curious about how mid-water life supports whales, tunas, and the health of our seas.
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Episode Guest: Chris Dorsett
Learn more about Chris Dorsett and Ocean Conservency here
Read Motion 035
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Hosted, produced, and edited by Clark Marchese
Cover art by Jomiro Eming
Theme music by Nela Ruiz
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Listen to South Pole on Spotify or Apple Podcasts
Listen to Plastic Podcast on Spotify or Apple Podcasts
Listen to Something in the Water on Spotify or Apple Podcasts
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