WA search for man swept off rocks into sea

A search is underway after a man was swept into the ocean in Western Australia's South West region.

The man in his 20s was standing on rocks at Injidup Nature Spa in Yallingup, about 256 kilometres south of Perth, when a large wave knocked him into the sea about 5:10pm on Monday.

The search will resume after first light on Tuesday after authorities failed to find the man overnight.

WA Police say the conditions are hazardous and the safety of the searchers is paramount.