A sea urchin is nestled in a coral formation off Bonaire Island.

一只海胆正舒适地安定在博内尔岛外的珊瑚丛里。

In the first century A.D., Pliny the Elder wrote of using sea urchin ashes to treat baldness.

公元一世纪，老普林尼曾写过用海胆的灰烬治疗来秃头。

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 bright red color of a fire urchin warns predators that its spines are poisonous. Sea otters are the major predators of sea urchins.

火海胆鲜红的颜色警告捕食者它的刺有毒。海獭是海胆的主要捕食者。

The consequences of interacting with the array of sharp spines on a sea urchin or porcupine are pretty obvious to any creature passing by.

与海胆或豪猪身上的尖刺相互作用的结果对任何经过的生物来说都是相当明显的。