Plankton regularly travel vast distances up and down in the ocean. A water-filled hamster wheel with glass windows now enables detailed microscopic lab observations of individual aquatic microorganisms during their vertical migrations.

中文翻译：

---

在仓鼠轮子的浮游生物。

浮游生物经常在海洋中上下移动很远的距离。现在，带有玻璃窗的充满水的仓鼠轮可以对单个水生微生物在垂直迁移过程中进行详细的微观实验室观察。