description Johnston Atoll Lagoon Overview
Johnston Atoll Lagoon is the shallow enclosed water body within Johnston Atoll, a remote unincorporated territory of the United States in the Pacific Ocean. The atoll includes Johnston, Sand, North, and East islands and is part of the Johnston Atoll National Wildlife Refuge, which protects seabird and marine habitat. Its modern landscape was enlarged through coral dredging and fill, and the atoll also served as a base for United States high-altitude nuclear tests from the late 1950s through 1962.
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