恶劣的形势(A salty situation)

你可能想知道今天照片中的火山在哪里，但那不是熔岩。这些是旧金山湾的盐蒸发池。如果你碰巧在空中飞过这个国家的这一地区，你不仅会注意到明亮的橙色，还会注意到各种绿色和蓝色，甚至是品红池，它们是著名盐池的一部分。鲜艳的颜色是由盐水虾、藻类和其他微生物及其对不同盐含量的反应决定的。这种橙色是由于大约中等浓度的盐水和水中存在微小的盐水虾造成的。绿色表示含盐量低，而粉色或红色表示富藻池塘的含盐量高。
原文：
You might be wondering where the volcano is in today’s photo, but that’s not lava. These are salt evaporation ponds in San Francisco Bay. If you happen to be in the air and flying over this part of the country, you’ll notice not just the bright orange but various greens and blues and even magenta pools that are part of the famous salt ponds. The vibrant colours are determined by brine shrimp, algae, and other microorganisms and their responses to different levels of salt. This orange results from about a mid-level saline concentration and the presence of tiny brine shrimp in the water. Green indicates low levels of salt, while pink or red are signs of high salt content in an algae-rich pond.
《© Jeffrey Lewis/Tandem Stills + Motion》