Emergency services were called at 2.01pm to the incident on Hahei Beach Rd, the spokeswoman said. Around 2.30pm a Westpac rescue helicopter was at the scene but an ambulance crew and the fire service were still en route.
St John treated one patient in a minor condition and transported them to hospital.
Hahei Beach sits between the popular Cathedral Cove and Hot Water Beach. The town of Hahei normally has just a few hundred residents but this can swell to several thousand over summer.