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An estuary is a body of water that is created when freshwater from rivers and streams flows into the saltwater of an ocean.

In this activity, learners consider how oil spills behave in the ocean and what impact they have on marine wildlife.

In this archaeology activity, learners make observations and conduct an experiment to demonstrate the effect saltwater has on artifacts.

In the wild, small crustaceans known as brine shrimp live in marine habitats such as saltwater lakes.