Here is an extended interview with dockmaster George Reeder.
The 63-year-old dived into the water at Watchet marina to drag out a buggy after it was blown in by a gust of wind.
Six-month-old Sam Cooper Stevens spent several minutes trapped under the water.
More top news
The Avon Fire & Rescue Authority has been criticised in a government report, blaming poor leadership for a series of management failures.
Nominations are now open for the 2017 ITV Fundraiser of the Year – part of the Daily Mirror Pride of Britain Awards.
Gordon Davis from Gloucester was flying the light aircraft when it crashed into farmland near Marlborough killing him and his passenger.