River plume

When a river flows into the ocean, it brings all sorts of things with it like dirt, sand, and little creatures. This mixture of water and stuff is called a river plume. Imagine pouring a cup of milk into a glass of water and watching the milk mix with the water, it's kind of like that. The river plume can spread out and create a big cloudy area in the ocean. Sometimes, people can even see the color of the water change where the plume meets the ocean. This is because sometimes the river water is a different color than the ocean water. Scientists study river plumes to learn about how rivers affect the ocean environment and the animals that live there.