公元一世纪，老普林尼曾写过用海胆的灰烬治疗来秃头。
In the first century A.D., Pliny the Elder wrote of using sea urchin ashes to treat baldness.
火海胆的刺在印度尼西亚科莫多岛附近形成了五颜六色的花朵。
The spines of a fire urchin form a multicolored flower off Komodo Island, Indonesia.
海獭的减少会使海胆的数量增加，因为海獭以此为食，从而增加海胆对海藻林的食草压力。
Fewer otters would have allowed sea urchin populations on which the otters preyed to expand and the urchins' grazing pressure on kelp forests to increase.
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