A man has been taken to the Royal Cornwall Hospital after falling off a sea wall.
The man fell at least 10 feet from the sea wall onto rocks at St Mawes.
Falmouth inshore lifeboat was launched just before 0700 GMT on Wednesday after the Cornwall Fire Brigade contacted Falmouth Coastguard for assistance.
Coastguards said the man was cold and slipping in and out of consciousness.
Sean Brooks, from the coastguard, said it was not yet clear how far he fell.
" We don't know the exact circumstances but we understand he's fallen anywhere between 10 and 15 feet down onto rocks," he said.