Post-Blob, California’s kelp crisis isn’t going away

Post-Blob, California’s kelp crisis isn’t going away

FORT BRAGG, U.S. — In 2024, I was scuba diving in Northern California’s Casper Cove where the Watermen’s Alliance, a group of ex-abalone sports divers, has been culling purple urchins since 2020. It had been six years since abalone season shut down, following the region’s kelp forest collapse. About 4 meters (13 feet) down, I spotted a few surviving red abalones, their thick-muscled feet showing from under their single shells as they clung to th…