As burrowing animals evolved, the ocean bottom was becoming a lot softer.

随着穴居动物的进化，海底变得更加柔软。

Others had large dragonfly-like eyes that they probably used to scour the ocean bottom as they swam upside-down in dim waters.

有些三叶虫则具有如蜻蜓眼般的大眼睛，可以让它们在昏暗的水域颠倒游泳时，用来搜寻海底。

Wild shrimp are typically caught by dragging nets the size of a football field along the ocean bottom, disrupting or destroying seafloor habitats.

捕获野生虾的方式通常是沿着海底拖曳足球场大小的网，扰乱或破坏海底栖息地。

This change in how animals used the seafloor is known as the Cambrian Substrate Revolution, and it created the ocean bottom we see today.

这种动物使用海底方式的变化被称为寒武纪基质革命，它创造了我们今天看到的海底。

Hundreds of thousands of trawlers scrape the ocean bottom and they remove everything in their path leaving devastation behind and its annihilation fishing pure and simple, and it has to stop.

成千上万的拖网渔船在海底扫荡，把沿途的一切都清除掉，这是毁灭性的捕鱼，所以必须停止。

Scuba dives revealed that the communities of starfish, snails, sea cucumbers and other creatures that live on the sandy ocean bottom offshore have not budged since the plant opened in 2015.

水肺潜水报告揭示，自该工厂在2015年投入使用以来，生活在近海沙地海床的海星、蜗牛、海参和其他生物群体并未移走。

Boaty did encounter a bit of trouble, like a school of krill so dense it tricked the submersible’s echo sounders, which use sonar to tell how far down the ocean’s bottom is.

Boaty 确实遇到了一些麻烦，就像一群非常密集的磷虾欺骗了潜水器的回声探测器， 后者使用声纳来判断海底有多远。

After the kelp grows, the biodegradable buoy will dissolve and loses it buoyancy and by then the kelp is so heavy that it sinks to the ocean bottom, sequestering the carbon for a thousand plus years.

海带生长后，可降解的浮标就会溶解并失去浮力，那时海带就重得沉入海底，将二氧化碳封存一千多年。

However, large animals also eventually die, and especially as in the case of the death of a large whale, such a carcass, when it eventually  reaches the ocean bottom, will act as a meal for thousands of creatures over many months.

然而， 大型动物最终也会死亡，尤其是大型鲸鱼的死亡，当它尸体最终到达海底时，将在数月内成为数千只生物的食物。