Alaska Underwater Adventures is based in Anchorage, Alaska. We are dedicated to the use and promotion of the bountiful seas of Alaska for recreational diving from Nome to Ketchikan. Alaska has over 33,904 miles of coastline, much of it still unexplored. The second greatest tide range in North America is 38.9 feet in Upper Cook Inlet near Anchorage. Water temperatures range from as high as 60 degrees Fahrenheit in the summer to as low as 30 degrees Fahrenheit in the winter.
Diving is best during the winter months due to the greater visibility.
Late spring and early summer usually have poorer visibility due to plankton blooms and silty runoff from the glaciers.