There are many aquatic habitats. Aquatic habitats involve water. We can divide aquatic habitats into two basic types: salt water (marine) and fresh water. Classify each ecosystem under the correct heading: salt water or fresh water.
Ecosystem options:
Stream, Ocean, Pond, Salt marsh, Estuary, River, Coral reef, Lake
Salt water: Ocean, Salt marsh, Estuary, Coral reef
Fresh water: Stream, Pond, River, Lake