此处讨论的加勒比海珊瑚礁在20世纪80年代中期遭受沉重打击，当时一种神秘疾病几乎使冠刺棘海胆(Diadema antillarum)灭绝。
The Caribbean coral reefs in question were dealt a blow in the mid 1980s when a mysterious disease almost completely wiped out the spiny urchin (Diadema antillarum).
海胆在海峡群岛附近的海底挥舞着它们的棘突。科学家最近发现这些没有眼睛的无脊椎动物可以用它们的刺上的探测光来看东西。
Sea urchins brandish their spines on the seafloor near the Channel Islands. Scientists recently discovered that the eyeless invertebrates "see" by detecting light with their spines.
海胆在海峡群岛附近的海底挥舞着它们的棘突。
Sea urchins brandish their spines on the seafloor near the Channel Islands.
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