Along the eastern coast of Malta, the processes responsible for the transport of anomalous large boulders from the sea to the coast were analysed. The wave heights required to transport them from the sea to the coast were estimated using a hydrodynamic approach, while AMS ¹⁴C ages were determined from encrusted marine organisms. The combination of the results suggests that the majority of boulders were detached and moved by storm waves, but the occurrence of past tsunamis cannot be ruled out.