Canvey Island the 30 hectares known as West Canvey marshes, acquired by the RSPB in 2007, and the Canvey Wick nature reserve. Canvey Wick is a designated Site of Special Scientific Interest (SSSI) at the site of the abandoned and incomplete oil refinery. The foundations of the 100 hectare (0.4 sq mile) site were prepared in the 1970s by laying thousands of tonnes of silt dredged from the Thames; the abandoned and undisturbed area has flourished as a haven for around 1,300 species of wildlife, many of which are endangered or were thought to be extinct; including the shrill carder bee, the
Hilbre Islands Hilbre Islands The Hilbre Islands ( ) are an archipelago consisting of three islands at the mouth of the estuary of the River Dee, the border between England and Wales at this point. The islands are administratively part of the Metropolitan Borough of Wirral. They are a Local Nature Reserve and are within the estuary Site of Special Scientific Interest. As of 2012, the islands have no permanent residents. The name is thought to derive from a chapel built on the Island and dedicated to St. Hildeburgh. During the summer months tourists travel by foot to the Islands from West