The coast and its adjacent areas on and off shore are an important part of a local ecosystem: the mixture of fresh water and salt water in estuaries provides many nutrients for marine life. Salt marshes and beaches also support a diversity of plants, animals, and insects crucial to the food chain.
The high level of biodiversity creates a high level of biological activity, which has attracted human activity for thousands of years.
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“When will the world learn that a million men are of no importance compared with one man?”
—Henry David Thoreau (18171862)