Tides
Why Tide Times Change Each Day Along the Coast
Why do tide times change each day? Learn how the Moon, Sun, and coastal shape shift local high water, and choose the…
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Browse explanations of coastal processes, shoreline forms, estuaries, habitats and the history of how we understand the coast.
Shorelines
Dune, Cliff or Shingle: Reading Three Shoreline Forms
Dune, cliff or shingle shoreline? Learn to read sand, exposed rock, and rounded pebbles by their shape, material, and…
Estuaries
Where River Water Meets the Sea
See how estuary water mixes and why channels and sediment shift, so you can read these changing boundaries in the…
Coastal History
The Coastline on an Old Map Is Not a Fixed Line
Read an old coastal map with more care: separate survey choices from shoreline change and avoid treating a drawn edge…
Coastal Habitats
A Slow Look at a Rocky Shore
A slow look at a rocky shore reveals how pools, ledges, and water movement shape intertidal habitat—all from a stable…