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Apra, Guam
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MTMNM
Get to know more about where we've been for the beginning of our 2025 season! The Mariana Trench Marine National Monument protects 95,216 square miles (246,610 km2) of submerged lands and waters around the Mariana Archipelago. It includes three units: Islands Unit (the waters and submerged lands up to low tide mark around the three northernmost Mariana Islands - Farallon de Pajaros, Maug, and Asuncion, Volcanic Unit (the submerged lands within 1 nautical mile of 21 designated volcanic sites, west of the Mariana Archipelago), and Trench Unit (submerged lands of the trench habitat).
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