Chichester Harbour in the context of "Special Protection Area"

Sussex (/ˈsʌsɪks/; from the Old English Sūþseaxe; lit. 'South Saxons'; 'Sussex') is an area of South East England that was historically a kingdom and, later, a county. The current ceremonial counties of East Sussex and West Sussex cover approximately the same area. The two ceremonial counties border Surrey to the north, Kent to the north-east, the English Channel to the south, and Hampshire to the west. Sussex contains the city of Brighton and Hove and its wider city region, part of the South Downs National Park and the national landscape of the High Weald, and Chichester Harbour. Its coastline is 137 miles (220 km) long.

The Kingdom of Sussex emerged in the fifth century in the area that had previously been inhabited by the Regni tribe in the Romano-British period. In about 827, shortly after the Battle of Ellendun, Sussex was conquered by Wessex. From 860 it was ruled by the kings of Wessex, and in 927 it became part of the Kingdom of England. By the Norman period, Sussex was subdivided into six administrative districts known as rapes, which were themselves divided into hundreds. By the sixteenth century, the eastern three rapes and the western three rapes had been combined for most meetings of the court of quarter sessions, a division which was reinforced when the administrative counties of East Sussex and West Sussex were established in 1889. Subsequent local government reforms maintained the division into east and west. The county retained a single lord lieutenant and sheriff until 1974, when they were replaced with separate posts for East and West Sussex and Sussex lost its status as a ceremonial county.

50°50′13″N 0°46′48″W / 50.837°N 0.780°W / 50.837; -0.780

Noviomagus Reginorum was Chichester's Roman heart, very little of which survives above ground. It lay in the land of the Atrebates and is in the early medieval-founded English county of West Sussex. On the English Channel, Chichester Harbour, today eclipsed by Portsmouth Harbour, lies 4+1⁄2 miles (7 kilometres) south.