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

Follow the IUCN World Conference and find the full list of motions here 

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Episode Transcript  and more information on the Pine Forest Media website

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Hosted, produced, and edited by Clark Marchese 

Cover art by Jomiro Eming

Theme music by Nela Ruiz

Find some more Pine Forest Media podcasts below:

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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