"On the Pacific Coast of North America, playful sea otters hunt for sea urchins in the lush kelp forests beneath the waves. But there was a time when people took the otters away, hunting them for their thick, warm fur and almost driving them to extinction. Without sea otters to eat them, an army of sea urchins grew and devoured the kelp. Entire kelp forests were lost, along with all the marine life that depends on the kelp for survival. But when people protected the sea otters, their numbers began to recover, and so did the kelp forests"--Dust jacket flap.
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