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Between the Tides

The greatest tidal changes in the world occur along the northern Atlantic Coast.

At the Bay of Fundy in Nova Scotia, the tidal change has been measured at 56 feet during the twice-monthly spring tides, which occur at the time of both the new and the full moon.

Farther south, along the barrier islands, the changes are far smaller and the intertidal region of the coastline is more limited.

As with intertidal regions everywhere on the planet, there are recognizable zones from low tide to high tide, each occupied by different plants and animals. All have differing adaptations … to eat and avoid being eaten … to balance moisture, air, and salt, so as to avoid dehydration or drowning.


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