Kelp Wanted: Marine Heatwaves, Zombie Urchins, and Kelp Restoration with Kristy Kroeker

Marine ecologist and UC Santa Cruz professor Kristy Kroeker unravels the dramatic chain reactions triggered when the sea gets too hot. From the collapse of California’s iconic kelp forests to the surprising takeover by zombie sea urchins, she reveals how the loss of key predators like the sunflower star can flip entire ecosystems on their head. But this isn’t just a story of loss; it’s also one of action and hope. Kristy spotlights bold, hands-on efforts to bring kelp forests back to life, showing how scientists and local communities are teaming up in creative ways to restore balance beneath the waves. With a deep belief in nature’s resilience, she reminds us that when people come together, real change is possible for our oceans.00:00 - Threats to Kelp Forests from Climate Shocks03:17 - Kristy Kroeker’s Research and Career Journey04:14 - The Blob: 2014-2016 Marine Heat Wave09:11 - Marine Heat Waves Affecting Kelp Recovery12:53 - Sea Urchins' Zombie Behavior and Their Role in Kelp Decline17:23 - Conservation Strategies and Community Involvement26:26 - Predator Restoration and Ecological Leverage39:55 - Science and Policy in Ocean Conservation