Paull Holme Strays was the first major  flood prevention works to help protect the City of Hull and surrounding areas from future flooding with a managed realignment scheme on the River Humber which was breached by the Environment Agency in 2003. The site provides approximately 80 ha of inter-tidal habitat to compensate for the loss of saltmarsh and mudflats in the area. Managed in partnership with the Environment Agency the grassalnds provide a great habitat for Butterflies including  some threatened species like Small Heath