The coastline is dominated by high chalk cliffs in the east and urbanized plains in the west, running to the estuary of the River Adur at Shoreham-by-Sea.

The coastal and marine environments are made up of a moderately exposed coast and inshore area of the English Channel with cliffs providing nesting niches for birds such as Northern fulmar (Fulmarus glacialis).

They are attracted to the natural environment, contemporary culture and heritage, which includes a range of archaeological sites dating back to the Neolithic period as well as a legacy of more recent urban architecture.

However, socio-economic challenges exist with urban areas constrained in their size and future growth by their geography (between the sea and the national park).

Coastal fishing sees the majority of the catch sent to local and regional markets and restaurants with the remainder going to mainland Europe where there is high demand.