Born in Sydney, Naomi Flood excelled in swimming, surfing and surf lifesaving. She came to light in 2003 when she won the Australian junior board race title and finished fifth in the open ironwoman event. Over the next three years she won state, Australian and World titles before winning the illustrious Australian Ironwoman final in 2006, the highest achievement in world lifesaving. In 2008 she won six gold and one silver medals at the World Championships and took out the World Ironwoman title (which she defended two years later). Flood has continued to excel in Australian and International Surf Lifesaving whilst also building a sprint kayaking career.
She competed at the London 2012 Olympic Games in the K2 500m with Lyndsay Fogarty finishing 12th.