A 36-year-old man slipped off the rocks into the water at Cape Arid near the mouth of Thomas River, east of Esperance, about 2.20pm yesterday, police said.
He was with a family member at the time and has not been seen since.
Emergency services are today scouring the coastal waters in and around Cape Arid for the man.
“A number of resources including vessels, jet-skis and air assets are currently searching the surrounding area, with SES assisting on foot at nearby beaches,” police said.
“The search will remain ongoing throughout the day.”
