Lord Howe Island experienced extremely low tides – tens of centimetres lower than the published tidal predictions, which are based on calculations of astronomical movements of the sun and moon around the earth, creating gravitational pull on the world’s oceans.
Ian Hutton, curator at the LHI Museum, found a breakthrough in identifying a worn copper coin discovered by island resident Esven Fenton near Capella hill, thanks to an online app named CoinSnap, after previous attempts had failed.