The search resumes this morning for a swimmer missing on the NSW Mid North Coast.

An 18-year-old man was spotted in trouble in the water about 4.20pm yesterday, sparking a search at Little Bay Beach, Arakoon, about an hour from Coffs Harbour.

Police and Surf Life Saving NSW personnel were involved in looking for the man, but they couldn’t find him.

An 18-year-old man was spotted in trouble in the water about 4.20pm yesterday, sparking a search at Little Bay Beach, Arakoon. (Supplied)

The operation was suspended overnight to resume this morning.

Little Bay Beach is near South West Rocks and is popular for picnics, birdwatching, hiking, fishing and swimming.

Visit NSW describes the granite cliffs surrounding the sand as “stunning”.