For more than 30 years, Matt Pressly has been diving off the coast of California for sea urchins, sold in sushi restaurants as a delicacy called “uni.”
In that time, he’s seen urchins move to deeper water in search of the kelp they feed off ‒ kelp that in many cases no longer grows the way it used to. Scientists say hotter water is rapidly changing the ecosystems of California coastal areas. Among the changes: less kelp in shallower areas.
Learn more about our investigation into California’s waters in collaboration with the Pulitzer Center https://bit.ly/476KKaz