With the recent full moon on Saturaday night brought tides reaching the top of the wharf in St. Stephen over the weekend. Tides are influenced by the regular fluctuations in gravitational pulls caused by the sun and moon. One hundred billion tonnes of water flows into and out of the Bay on an average tide, twice a day, creating rip-currents, seething up-wellings, swirling whirlpools and a tidal range reaching 16m (53 ft) at the head of the Bay.