Police, the Coastguard and RNLI were called to Port St Mary after clothes were left near the water.
The clothing was found at Chapel Beach, where a search of the area and water was carried out.
Sergeant Andy Reed says when they get a call like this they have to investigate the possibility that someone has entered the water and not come out.
It’s believed the clothes have been there for a few days and were left by someone who visited the beach – anyone missing these items, including keys, can contact Police Headquarters.
Airport could see problems tomorrow
Schools closure decision expected tomorrow
DOI warns over hazardous road conditions
Weather closes Mountain Road again
Amber weather warning for ice
Empire Garage company applies for dissolution
Yellow weather warning remains in place
Women's worldwide motorbike relay event this month