After purple urchins helped nearly wipe out 96% of California's iconic underwater bull kelp forests over a six-year span, biologists say they are seeing promising signs that efforts to save them may be helping.
Sea urchins as a food source was addressed in the article:
Red urchins are favored over the purple urchins because they contain more edible uni or roe inside, but commercial divers say the amount has shrunk with less kelp.
Chefs have started serving purple urchins to build a market.
Sea urchins as a food source was addressed in the article: