Two fishermen missing on NSW central coast

A search is under way for two men who haven't returned from a fishing trip on the NSW Central Coast.

The pair, aged 38 and 65, went prawn fishing near The Entrance last night and were due back around 11pm but never returned, police said.

An angler alerted authorities after he saw a light bobbing in the water about 12.30am today and a search found items believed to belong to the father and his son-in-law who were reported missing by family.

The Westpac Helicopter, local marine rescue and lifesavers are involved in the search.