translation.en: This is their baseline. This is what they think is natural because we started modern science with scuba diving long after we started degrading marine ecosystems.
translation.zh: 这是他们的出发点，他们认为这一情形很正常 因为我们借助潜水工具 开始现代海洋科学研究 已经是海洋生态系统开始退化之后很久的事情