There is a lot of spirogyra floating in this pond.

In this chemical reaction, hydration plays an important role.

This area is rich in subterranean rivers, which serve as a source of groundwater.

The Arctic Ocean is the coldest sea on Earth.

The saffron cod is a winter specialty in Hokkaido.

Since he started his new job, he's been lively as if he were a fish back in water.

He absorbs new information like a sponge soaking up water.

The European water vole is a small mammal native to Europe.

This steam is what you see when water vapor cools down.

This building is equipped with an impermeable wall, preventing water intrusion.