Ocean Ecosystems

Oceans, seas, and some lakes are examples of saltwater ecosystems.

The amount of salt in each one is not the same.

Plants and animals live in the shallow (not deep) parts because the suns shines more in these areas.

Ocean ZonesOceans are the world’s largest ecosystem. Water is deeper is some places than in

others and the water temperature also changes.

The ocean is divided into three zones. The zones are defined by how much sunlight they get.

The deeper the water, the colder and darker it becomes.

Plants and animals can be found in the areas closer to the surface.

Ocean Zones (continued)

Animals Found in Saltwater Ecosystems

fish

whales

penguins

sharks

crustaceans

sponges

Animals Found in Freshwater Ecosystems

Puffer fish

Bullfrog

Turtle

Trout

Pelican

Otter

Grebe