NOAA
Noaa: National Ocean Service: Education: Tides and Water Levels
A great resource for explaining and understanding tides. Find out what tides are and why it is so important to monitor them. This is an extensive tutorial followed by a set of review questions. All of the information can be downloaded as...
Other
Quoddy Loop: Tides
This resource gives an in-depth description of the Quoddy Loop of Islands within the Bay of Fundy. This area has the greatest tidal range in the world. Learn what causes these massive tides.