Letham joined Hawaian surfing legend Duke Kahanamoku (the Big Kahuna) in a tandem surfing exhibition at Freshwater Beach, near Manly, Australia. “And as a result,” Melbourne University historian Nikki Henningham said in 2007, “she goes down in history as the first Australian to ride in Australian surf in the Hawaiian style — the first Australian surfer.”
Letham spent early months of 1915 touring around Australia with the Big Kahuna and his entourage. The press nicknamed her the Sydney Sea Gull and Diana of the Waves.
Some say Australians had been surfing for at least three years, without Letham’s publicity, before The Big Kahuna arrived in 1915.