The National Trust, a UK conservation charity, has sunk three large boats into the Blackwater Estuary in Essex, England, to create an artificial island. Birds can roost there, and the structure will protect the area’s saltmarshes (see panel).
An estuary is a place where a river widens and flows into the sea, and the Blackwater Estuary is home to some of the UK’s most threatened sea birds. It’s hoped that the artificial island will be a safe place for these birds, including avocets, dunlins, curlews, lapwings, oystercatchers and ringed plovers.
The National Trust and its partners are creating the island at the edge of the saltmarsh, where the ocean meets the land during high and low tide. The old boats are barges that once carried all sorts of heavy cargo,…
