The lessee of Punakaiki Beach Camp is worried the camp may not last the winter, as more rough seas batter the West Coast.
Craig Findlay says sea erosion caused by the prevailing westerly conditions -- and another period of heavy seas - have made further inroads into the area immediately in front of the camp's wetland.
"The problem is now being exaacerbated by the fact that the southern extent of the foreshore protrudes beyond the natural erosion line," Mr Findlay said.
"This has created a shoulder for the sea to bounce off, thus creating an eddy-type situation which has the potential to remove large quantities of sand at a far greater rate than the current level of retreat."
Mr Findlay said because the wetland acted as the "final polishing" stage for the camp's sewage "if that goes, we can't run the camp".