The Avon estuary in England

Estuaries

An estuary is an inlet of the sea, into which flows a river or stream. Fresh and salt water mix here, so the inhabitants have to cope with both. Some estuaries have extensive mudflats which are exposed at low tide, and teem with life. Many estuaries were formed at the end of the Ice Age, when sea level rose and flooded the coast. If an estuary completely silts up, it will turn into a delta.

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  • Seaside spectacular Seaside spectacular

    When it comes to summer holidays, there's no better place than the seaside and if you know where to look you'll be surprised at the wildlife you can find.

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