I Wonder - What Is A River Mouth?

The video explains the concept of rivers, starting with their origins from springs or melting glaciers. It describes how rivers grow by merging with other water sources and flow from mountains to larger bodies of water like lakes, seas, or oceans. The video concludes with an explanation of the river mouth, where the river widens and empties into a larger water body.

What new insight or understanding did you gain from this video?