Estuary Science

What is an estuary?

An estuary is where fresh water meets saltwater. They are unique environments that sustain diverse plant and animal life — and they are key resources for our economy. Explore what defines an estuary's boundary, what species you will find within the seagrass, how dams and pollution affect our coasts, and much more below. RAE provides the resources and tools you need to understand our estuaries, and most importantly, how to protect them.


How do you define an estuary, and what types of plants and animals inhabit them?

Climate Change

Estuaries face rising sea-level, natural disasters, and more. How will they adapt?


Dams, pollution, and development all harm estuaries. Learn more.


Estuaries boost the economy by $12 billion every year. They're vital resources for our financial health.