 The most important wildlife and geological sites are designated as SSSIs in order to give them legal protection.As of July 2019 there are 77 SSSIs in West Sussex, of which 53 are biological, 18 are geological and 6 are both biological and geological.Twenty-four are Geological Conservation Review sites, fifteen are Nature Conservation Review sites, ten are Special Areas of Conservation, six are Special Protection Areas, five are internationally important Ramsar wetland sites, two are National Nature Reserves, seven are Local Nature Reserves, parts of six are Scheduled Monuments, ten are managed by the Sussex Wildlife Trust and one, which is partly in Surrey, is managed by the Surrey Wildlife Trust.