The site is mainly fished by vessels based on the Sussex coast in Selsey, Shoreham-by-Sea, Newhaven and Littlehampton.

Most vessels fishing in the site are small static gear boats under 10 metres.

[5] Kingmere Rocks is one of the most important sites for the breeding of black sea bream.

[6] The Worthing Lumps is home to the first and only location for Baillon's wrasse in Sussex, a fish normally found in the British Isles off the coast of Dorset and Galway in Ireland.

[6] The Worthing Lumps are home to other rare fish such as blennies and the lesser spotted dogfish.