海鞘

例句：

1. 1. The sea snail is a fascinating creature that lives in the ocean.
   海蜗牛是一种令人着迷的海洋生物。
2. 2. Scientists are studying the behavior of these creatures to better understand their ecosystem.
   科学家们正在研究这些生物的行为，以更好地了解它们的生态系统。
3. 3. The sea snail's shell is a beautiful work of art, with intricate patterns and colors.
   海蜗牛的壳是一幅美丽的艺术作品，有着复杂的图案和颜色。