加利福尼亚州圣克鲁兹合众国际社报道，美国研究人员认为在礁石上进行频繁捕捞会导致海胆的迅猛繁殖，而过量的海胆则会破坏构成热带礁石系的珊瑚藻类。
SANTA CRUZ, Calif., Jan. 14 (UPI) — Overfishing of reefs leads to explosions in populations of sea urchins, which destroy coral algae that build tropical reef systems, U.S. researchers say.
大堡礁是由2500多个单个礁石和900多个岛屿为特色构成的。
The Great Barrier reef features more than 2500 individual reefs and 900 islands.
这幅图可能会被误认为是刚出土还没被清理干净的恐龙化石，其实那些是构成大堡礁的其中一些礁石。
What might be mistaken for dinosaur bones being unearthed at a paleontological dig are some of the individual reefs that make up the Great Barrier Reef, the world's largest tropical coral-reef system.
这幅图可能会被误认为是刚出土还没被清理干净的恐龙化石，其实那些是构成大堡礁的其中一些礁石。
What might be mistaken for dinosaur bones being unearthed at a paleontological dig are some of the individual reefs that make up the Great Barrier Reef, the world's largest tropical coral-reef system.
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