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
Locomotives from around the country are in Bristol to celebrate 40 years of the High Speed Train.
Wiltshire astronaut Tim Peake is to stay in space an extra 13 days. He has been on the International Space Station (ISS) since December
A man (87) and woman (78) were trapped off the A46 in Gloucestershire overnight - the car was eventually spotted by a passing driver.