Created in 2006, Papahānaumokuākea is the largest conservation area in the U.S. and one of the largest marine conservation areas in the world. Located in the Northwestern Hawaiian Islands, it is home to extensive coral reefs harboring over 7,000 marine species, one quarter of which are found only in Hawaiʻi. Many of the islands and shallow water environments are important habitats for rare species such as the threatened green sea turtle and the endangered Hawaiian monk seal. Significant cultural Native Hawaiian sites can also be found on the islands of Nihoa and Mokumanamana (Necker Island).
source: Marine Conservation Institute
info: http://papahanaumokuakea.gov
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