Sea urchin explosion off California, Oregon decimates kelp

Tens of millions of voracious purple sea urchins that have already chomped their way through towering underwater kelp forests in California are spreading north to Oregon, sending the delicate marine ecosystem off the shore into such disarray that other critical species are starving to death.

from Phys.org - latest science and technology news stories https://ift.tt/361gQG8

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