在此原则的指导下，日本船厂建造了世界上第一艘双壳(DOUBLE HULL)的大型原油轮(VLCC)和散货船，全面禁止了含铅类防污染油在船壳外板上的使用。这些措施均提升了全面质量管理的内涵。
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例如，海星捕食各种双壳类软体动物，防止这些双壳类动物独占海底的栖息地。
For example, sea stars prey on a variety of bivalve mollusks and prevent these bivalves from monopolizing habitats on the sea floor.
不过，协定没有涉及到双壳贝类、水产品卫生和检疫问题。
However, it does not include trade of bivalves, fish health and quarantine issues.
这些美味的双壳贝类生物以清除水中过量的浮游植物闻名于世，它们把营养变成肉和贝壳。
The tasty bivalves are known for removing excess phytoplankton from water and sequestering nutrients in their shells and flesh.
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