For all of human history, the oceans and the life within them have remained a stable and fundamental part of Earth as we know it. Yet, for the past few decades, fisheries and scientists alike have observed massive migrations in marine ecosystems unlike anything we’ve ever witnessed. What is driving these unprecedented movements, and how are they rippling out to affect every aspect of life

In this conversation, Nate is joined by marine ecologist Malin Pinsky, whose decades of research shed light on the dramatic migrations of marine species due to rising ocean temperatures. Malin breaks down the science behind these changes – from declining oxygen levels pushing fish toward the poles, to the cascading impacts on intricate marine food webs, as well as the growing threat of localized extinctions among key fishery species.

How has a cultural disconnect from the importance of biodiversity and the interdependence of life led to such a drastic impact on the function of our oceans? What do these changes mean for humanity, including impacts on global food security and geopolitical stability? Finally, could reconnecting with the ocean’s abundant, diverse ecosystems help us reduce our impact on these deep, blue pillars of life?

(Conversation recorded on April 22nd, 2025)

More TGS Ocean Episodes

About Malin Pinsky:

Malin Pinsky is an Associate Professor in the Department of Ecology & Evolutionary Biology at the University of California Santa Cruz with expertise in the adaptation of ocean life to climate change and applications to ocean conservation and fisheries. His more than 120 publications have appeared in Science, Nature, and other journals.

He is a Fellow of the American Association for the Advancement of Science, an Earth Leadership Fellow, and an Early Career Fellow of the Ecological Society of America. Pinsky serves on advisory boards for the Beijer Institute of the Royal Swedish Academy of Sciences, the non-profit Oceana, and the Chewonki Foundation. He grew up exploring tidepools and mountains in Maine.

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The Fish are Fleeing: How Shifting Marine Ecosystems are Upending Life with Malin Pinsky

The Great Simplification with Nate Hagens