Not only do these places -- these ancient, pristine places -- have lots of fish, but they also have other important components of the ecosystem like the giant clams; pavements of giant clams in the lagoons, up to 20, 25 per square meter.
这些 古老、原始的地方不仅有很多鱼 而且还有其他生态系统中重要的组成部分 比如大蛤 环礁湖中大蛤聚集生长 每平方米最多可以有20、25个