She is investigating the effects of changing acidity and temperature in the sea on a creature called the purple sea urchin.
她正在调查改变海水的酸性和温度对叫紫海胆的这一生物的影响。
The vivid purple spines of this sea urchin from God's Pocket Marine Provincial Park, British Columbia, help it move along the seafloor, as do hydraulically operated tube feet.
这个有着鲜艳紫色棘突的海胆来自大不列颠哥伦比亚——上帝的口袋海洋省立公园。
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