Wirral coastguard were called out to reports of a person and his dog stranded in knee deep water at New Brighton on Monday night.
The fast tide had cut the man and his dog off from North Bank at around 6.31pm.
In attempt to lift his dog out the water, his mobile phone dropped into flooding tide, so the man was unable to call for the emergency services himself.
Residents in the nearby vicinity heard cries for help and called 999 who dispatched Wirral Coastguard teams.
On arrival the team found that the casualty and his dog had managed to swim ashore.
Wirral Coastguard team members and RNLI hovercraft crew administered first aid whilst awaiting the arrival North West Ambulance.