Do you know what water ecosystems are?
First of all you need to know what ecosystems are. Ecosystems are all the living and nonliving things in the area that interact with each other. Some animals that live in water are jellyfish, whales, trouts, catfish,crayfish, dolphins, flounders, starfish, moss, coral, octopus, and sea urchins, frogs, leeches. Some plants that live there are coral and lilies.Streams have fresh and running water. Oceans have salt water with waves. Ponds have fresh still water. The deeper you go in the ocean, pond, or stream the colder it gets. Phytoplankton is the start of the ocean food chain. Esturies are made when fresh and salt water is mixed.