Kelp Forest Ecosystems
Webinars

The National Marine Sanctuaries Webinar Series is an important resource in spreading general information, research findings, and empowering all audiences to protect marine resources. Enjoy this assortment of kelp forest oriented recorded webinars that offer a unique perspective from scientists, divers, researchers, and others on the topic.

Collage of photos. Clockwise: Lemon nudibranch, Photo of guest speaker Luan Roberts, seascape image looking out at seastacks and blue water on a sunny day, Olive's Sapsucker, and alabaster nudibranch.

Learning to See Nudibranchs: How anyone in Washington can find, experience, and contribute to the study of sea slugs

Nudibranchs are vivid, strange, and far more common than most people realize. Join Luan Roberts as she focuses on how to experience nudibranchs in the Pacific Northwest, from beginner-friendly encounters to independent discovery.

Collage of photos. Clockwise, Multiple colors of ochre sea stars (Pisaster ochraceus) 'The Ocean's Menagerie' book cover with curled octopus tentacle, coral, and jelly, Photo of speaker Dr. Drew Harvell standing in front of a cove and holding a sea star, 'Ocean Outbreak' book cover with an ochre sea star on a rock of a coastal tidepool.

How are Salish Sea Stars Faring in our Ocean's Menagerie?

A decade-long sea star wasting syndrome outbreak, driven by shifting marine environments, has endangered sunflower stars and altered kelp ecosystems from Alaska to Mexico. Research by Dr. Drew Harvell and colleagues identifies Vibrio pectenicida as a primary pathogen, aiding rehabilitation efforts. While the epidemic impacted twenty other species, many, like the ochre star, are now recovering. The Salish Sea continues to host globally significant populations of sea stars and nudibranchs, and we invite you to explore the capabilities of these diverse marine invertebrates.

opening slide with the text that reads: 'OCNMS-Feiro 2026 Speaker Series: Eelgrass Sustains Life in the Salish Sea'. A photo of Olivia Graham on a rocky shore.

Eelgrass Sustains Life in the Salish Sea

Join us to hear Dr. Olivia J. Graham talk about eelgrass; what it is, and why it matters to coastal ecosystems. She'll share the significance of eelgrass in sustaining coastal ecosystems along with recent eelgrass health and resilience research based at University of Washington's Friday Harbor Labs on San Juan Island.

An underwater photograph of a sea star on a rock. A scuba diver with a bright flashlight is visible in the dark background. Text on the image reads: 'Shooting for the Stars. Sunflower Star Laboratory's community-based approach to Pycnopodia conservation and kelp forest recovery. August 21st, 2025. NOAA Sanctuaries Webinar Series.'

Shooting for the Stars: Sunflower Star Laboratory's community-based approach to Pycnopodia conservation and kelp forest recovery

Sunflower Star Laboratory (SSL) is a conservation aquaculture nonprofit dedicated to restoring the critically-endangered Sunflower Star and saving California's kelp forests. In part because of the loss of this keystone urchin predator, over 96% of Northern California's kelp forests have disappeared in the last decade. In this talk, learn about how SSL is currently raising part of the first cohort of human-reared juvenile Sunflower Stars in California, conducting scientific research, and coordinating Sunflower Star recovery with partner institutions across North America.

 L to R: Various photos of sea lions in the water and on rocks; and a male researcher in a lifevest.

Fluctuations in seal lion abundance and prey consumption in northwest Washington

California and Steller sea lions are large-bodied predators of the northern California Current Ecosystem. Historically, hunting of these two sea lion species by Native Americans regulated their distribution and abundance. The two populations of sea lions have experienced rapid increases in abundance along the shores of the contiguous United States since the passage of the Marine Mammal Protection Act in 1972 and shifts in their distribution. The objective of this talk is to share how Steller and California sea lion abundance and prey consumption has fluctuated in recent decades in northwest Washington. We'll also explore what the two species of sea lions eat and how the fluctuations in their prey consumption could be affecting their local ecosystem.

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Monterey Bay's Iconic Kelp Forests

One of our nation's most spectacular marine protected areas, NOAA's Monterey Bay National Marine Sanctuary offers some of the best wildlife viewing in the world! This "Serengeti of the Sea" stretches along the central coast from San Francisco to Cambria and includes pristine beaches, jewel-like tide pools, lush kelp forests, steep canyons and an offshore seamount teeming with life—from tiny shrimp to giant blue whales. We invite you to learn more about this national undersea treasure. Join Dr. Lisa Wooninck, NOAA's Monterey Bay National Marine Sanctuary Superintendent, who will be speaking about the sanctuary's kelp forest ecosystems.

screenshot of a webinar: two presentors and a slide

Sea Otters in Washington State: Lessons Learned from the "Grand Experiment" of the Maritime Fur Trade

This "grand experiment" of the maritime fur trade throughout the North Pacific, including in Washington, has provided researchers with a unique opportunity to study sea otter populations by comparing areas where otters are absent versus areas in varying stages of recovery.

screenshot of a webinar: two presentors and a slide

Dive into a Changing Ecosystem: From Lush Kelp Forests to Urchin Barren

Tucked along California's coast is a vibrant underwater forest of towering kelp and diverse wildlife. In the last six years, unprecedented outbreaks of purple sea urchins have impacted kelp forests within Monterey Bay National Marine Sanctuary, lending several questions: What caused the urchin outbreak? How have sea otters responded? Will intervention and urchin culling enhance kelp recovery?

giant seabass swimming in a kelp forest

Giant Seabass: Kings of the Kelp Forest

Giant Seabass are a species of large fish that live in the cool waters off the coast of California. This fish is the top predator of the Kelp Forest Ecosystems, but the population has been low because of overfishing.

birds on a island in a river

Kelp Can Help!

This presentation looks at some of the impacts of climate change on Maine's ocean environment and the community-based approach the Island Institute takes to support island and coastal schools as they teach students how to plan for and adapt to climate change.