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Estuary - Wikipedia
Estuary | Coastal Features, Marine Life & Conservation | Britannica
What is an estuary? - NOAA's National Ocean Service
Estuary Definition & Meaning - Merriam-Webster
What is an estuary? Estuaries Tutorial - National Oceanic and ...
What Is an Estuary and Why Is It Important
Estuaries - NOAA's National Ocean Service
What types of plants and animals live in an estuary? - NOAA's …
Estuaries: Where the River Meets the Sea - Nature
Estuary - National Geographic Society