The park includes the 300-square-mile (777-square-km) Harding Icefield and its outflowing glaciers and numerous coastal fjords and islands, which are remnants of drowned mountains. Eight of the ice field's outflowing glaciers reach the sea and calve icebergs into the fjords. Alpine vegetation is found at high elevations nearest the glaciers, and a narrow belt of hemlock and spruce forest occurs along the fjords between the glaciers and the sea. Sea lions, sea otters, seals, and tens of thousands of breeding birds, including puffins, murres, and auklets, live along the fjords. The nontidewater Exit Glacier near Seward is accessible by road, and trails lead to it and to the Harding Icefield to the southwest. The fjords can be reached by boat or float plane.