
concept
Upwelling
The rise of deeper water to replace surface water that has moved away. Upwelled water is often cold and rich in regenerated nutrients, so it can fuel plankton and an entire food web when it reaches the sunlit layer.

concept
The rise of deeper water to replace surface water that has moved away. Upwelled water is often cold and rich in regenerated nutrients, so it can fuel plankton and an entire food web when it reaches the sunlit layer.