A tide is the periodic rise and fall of the water of oceans, seas, bays and so on caused by the gravitational interactions between the earth, moon and sun (Australian Hydrographic Service glossary).
Find out about water levels, tides and currents, including:
The tidal glossary – Manly Hydraulics Laboratory explains tidal terminology. The Australian Hydrographic Office also have a tidal glossary.
Get information about tidal research and predictions from the National Tidal Unit – Bureau of Meteorology.
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