珊瑚砂（Coral sand），就是指珊瑚或贝壳碎片，具持续释放碳酸钙的特性，形状、颗粒大小不均。
特殊的发育环境、物质组成和结构导致了珊瑚砂具有独特的物理力学性质。
It has special physical and mechanical properties due to its composition, structure and sedimentary environment.
在南海东岛牛塘海鸟粪土沉积层中发现一岩性明显不同于上、下层位的珊瑚砂夹层。
The sediment cores from "Cattle Pond" on Dongdao Island of South China Sea contain a coral sand sediment layer embedded by ornithogenic sediments with sharp stratigraphic contacts.
花园鳗小鳗鱼是钻入珊瑚礁的砂。
Garden eels are small eels that burrow into sands of coral reefs.
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