This video was created from a series of still photographs taken over the course of a single daily tidal cycle near Anchorage, Alaska. In some areas of Alaska daily tides can exceed 15 meters (45 feet!) This video gives some perspective of the changes in water level experienced at the Kachemak Bay National Estuarine Research Reserve, located on the western coast of the Kenai Peninsula, about 150 miles south of Anchorage.

In addition to effecting the distribution and abundance of plants and animals in the estuary, the daily tides effect the movement of all types of water-borne vessels, ranging from recreational fishers, to commercial transportation. (Video: Kachemak Bay NERRS site)

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