Seashells

Seashells. Written by Edie Evans. Focus question. How do seashells help mollusks?

《海贝壳》，作者：伊迪·埃文斯。 核心问题：海贝壳对软体动物有什么帮助？

Some animals grow bones inside their body. These bones are called a skeleton.

有些动物的骨头长在身体内部。 这些骨头统称为骨骼。

Some animals grow bones outside their body. These bones are called shells.

有些动物的骨头长在身体外部。 这些骨头叫做外壳。

Some animals that live in the ocean grow seashells. These animals are called mollusks.

有些生活在海洋里的动物会长出海贝壳。 这些动物叫做软体动物。

Mollusks are soft, but their seashells are hard, like bones. Seashells protect mollusks from other animals. Seashells are also homes for mollusks.

软体动物身体软软的，但它们的海贝壳像骨头一样坚硬。 海贝壳可以保护软体动物免受其他动物的伤害。 海贝壳也是软体动物的家。

This mollusk lives in a seashell. Its seashell is bumpy.

这只软体动物住在海贝壳里。 它的海贝壳凹凸不平。