The RNLI says the man and boy were were swept out to sea off Aberffraw, on the west coast of Anglesey.
The man was able to make his way back to shore, but the child is still missing.
More top news
The lead aircraft of the Red Arrows is being assessed after a bird strike.
An ancient grotto in Pontypool made from shells, bones and the teeth of animals will open to visitors for one day.
Events are being held to celebrate the 150th anniversary of the Welsh colony settling in Patagonia.