Invertebrates are animals that do not have backbones.

无脊椎动物则没有。

So specifically, fish as well as aquatic invertebrates.

特别是鱼类和水生无脊椎动物。”

Then there's the invertebrates that can get even smaller!

还有无脊椎动物可以变得更小！

Insects are invertebrates, or animals that do not have backbones.

昆虫没有脊椎，是无脊椎动物。

And I'm reviewing my knowledge of invertebrate zoology.

还在回想有关无脊椎动物的知识。

Oysters are soft-bodied invertebrates belonging to the phylum mollusca.

牡蛎是软体动物门下的软体无脊椎动物。

The two largest groups of animals are vertebrates and invertbrates.

最大的两个类别是脊椎动物和无脊椎动物。

Which of these sea creatures is the largest invertebrate on Earth?

以下哪种海洋生物是地球上最大的无脊椎动物？

Basically we collect data on fish, invertebrates, coral and coral diseases.

们会收集有关鱼类、无脊椎动物、珊瑚和珊瑚疾病的数据。

Multiple species of coral, multiple species of fish, invertebrates, all living happily together.

多种珊瑚，多种鱼类，无脊椎动物，都快乐地生活在一起。

It's the world's largest invertebrate, which is an animal with no backbone.

它是世界上最大的无脊椎动物，也就是没有脊椎的动物。

As the mollusk moves, the pearl is jostled to the next tiny tooth.

随着这种无脊椎动物移动，珍珠被挤到下一个小牙齿处。

Most of the animals in the world are invertebrates.

绝大部分动物都是无脊椎动物。

Invertebrates like snapping shrimp, fish and marine mammals all use sound.

诸如虾之类的无脊椎动物、 鱼类，以及海洋哺乳动物都使用声音。

But if a brain has to be inside of a skull, can invertebrates have brains at all?

但是如果大脑必须在头骨里，无脊椎动物真的有大脑吗？

Multiple species coral, multiple species of fish, invertebrates, all living happily together.

各式各样的珊瑚，多种多样的鱼、无脊椎动物，都快乐地生活在一起。

They can make a home for invertebrates, crustaceans, fish, and sea snakes to name a few.

它们可以为无脊椎动物、甲壳类动物、鱼以及海蛇等海洋生物提供栖息之地。

Pearls form when mollusks such as oysters create so-called pearl sacs around intrusive pieces of grit.

像牡蛎等无脊椎动物在侵入体内的沙粒周围形成珍珠囊，继而产生珍珠。

Plastic has been found in turtles, seabirds, fish, plankton, shellfish, even bottom-feeding invertebrates.

们可以在乌龟，海鸟，鱼类，浮游生物，贝类，甚至无脊椎动物身体里发现塑料。

Invertebrates from mollusks to coral to starfish all use calcium to build their bodies' support structures.

从软体动物到珊瑚再到海星，无脊椎动物都使用钙来构建身体的支撑结构。