WWT Arundel is one of nine wildfowl and wetland nature reserves managed by the Wildfowl and Wetlands Trust, a nature conservation charity in the United Kingdom. The 60 acre (240,000 m2) reserve is situated at the foot of the Offham Hangar, a part of the Arun valley in Arundel, West Sussex, England.One of the endangered species protected at the centre is the Hawaiian goose, or nēnē, the rarest goose in the world, and state bird of Hawaii.