The high tide caught out two anglers while they were fishing on the end of a break water in Essex.
The coastguard received a number of 999 calls from people concerned about the pair who were swamped by big waves and at risk of being swept into the sea.
The RNLI's Walton and Frinton Lifeboat was launched just before 12.30pm on Saturday, 28 September, to rescue the men as they tried to hold on to a navigational mark.
Luckily, the lifeboat station and ramp were close to where the anglers had been cut off.
With high tides, strong winds and flood alerts in place around the East coast over the next 24 hours, the RNLI is urging people to be extra careful.