Modern stromatolites form in shallow tidal areas, and are the result of bacteria growing and trapping minerals as they do so.
在浅滩地区形成的现代层叠岩石，是细菌生长和捕获矿物质而形成的。
For one thing, the hard aragonite is extremely resilient, an important trait for chitons, which are constantly being pummeled by waves in their natural habitats, shallow tidal pools.
例如，构成眼睛的硬质碳酸钙适应力极强，这对于石鳖来说很重要，因为它们要在自然栖息地——浅潮水坑中不断遭受海浪的冲击。
The shallow water wave theory is employed in the description of tidal flows.
潮流场计算是基于浅水波理论。
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