The visitor contact stations are open at different locations:
– Guam Nature Center: Wednesday to Sunday, 7:30 AM to 4:00 PM.
– American Memorial Park Amphitheater, Saipan: Monday to Friday, 8:00 AM to 4:30 PM.
Both are closed on federal holidays and may close due to weather conditions.
There is no entrance fee for the Mariana Trench Marine National Monument, as it is inaccessible for on-site visits.
From Saipan’s Capitol Hill, take Highway 31 to the coast, then embark on a boat journey into the depths of the Pacific, where towering volcanoes and the world’s deepest trench await.
Parking options are limited and not specified for the Mariana Trench Marine National Monument itself, but visitors can park at contact stations like Guam National Wildlife Refuge or American Memorial Park. No overnight parking, and fees are not mentioned. RV and motorcycle parking is not detailed.
Accessibility & permits
Emergency
- Cell service availability:None
In the vast expanse of the Pacific Ocean, east of the Philippines, lies the Mariana Trench Marine National Monument, a submerged wonderland that defies the conventional boundaries of terrestrial national parks. This vast protected area, spanning approximately 95,216 square miles, is a testament to the awe-inspiring depths and biodiversity of our oceanic world.
The monument is divided into three distinct units: the Islands Unit, encompassing the waters and submerged lands around Farallon de Pajaros, Maug, and Asuncion; the Volcanic Unit, a sanctuary for 21 designated volcanic sites; and the Trench Unit, which guards the deepest points of the Mariana Trench, a chasm deeper than Mount Everest is tall.
Here, the darkness is illuminated by bioluminescent creatures, and the silence is punctuated by the calls of seabirds. The monument is home to an array of marine life, including deep-sea fish, giant squid, and an assortment of coral species. The unique volcanic landscapes support a variety of microorganisms that thrive in the harsh, chemical-rich environments surrounding the volcanic vents.
While this monument does not offer traditional hiking trails or historic lodges, it is a paradise for scientists and deep-sea explorers. Special expeditions and research vessels frequently visit this area, providing rare opportunities for those who seek to explore the uncharted depths of our planet.
For those who wish to experience the surrounding islands, Saipan, with its picturesque beaches and rich history, is a nearby haven. The island offers a blend of modern amenities and traditional culture, with artisan towns and local markets that showcase the unique craftsmanship of the region.
Seasonal changes bring different migrations of marine life, making each visit a unique experience. Though there are no summer concerts or ranger-led canoe tours here, the sheer magnificence of this underwater world is an event in itself, beckoning travelers to delve into its mysteries and appreciate the untouched beauty of our oceanic frontier.
- Area (mi²)
- 95216
- Annual visitors
- 400 000
- Established year
- 2009
Top 3 Facts about Marianas Trench Marine National Monument
The Champagne vent at the NW Eifuku volcano produces almost pure liquid carbon dioxide, a rare phenomenon supporting unusual life forms in harsh conditions with highly acidic and boiling water.
In the depths of the Pacific, a realm of unparalleled biodiversity thrives. Here, coral ecosystems flaunt over 300 species, teeming with apex predators like sharks, whales, and dolphins. Colorful deep-water fish and endangered sea turtles inhabit these waters. The seafloor, home to xenophyophores resembling giant amoebae, deep-sea jellyfish, and shrimplike amphipods, is a testament to life’s resilience in extreme environments. New species, including cladorhizid sponges and crinoids, continue to be discovered, making this a frontier for marine exploration.
In the depths of the Pacific, an vast expanse of ocean stretches over 96,714 square miles, featuring the deepest underwater canyon, plunging to depths greater than Mount Everest’s height above sea level. Here, crystal-clear waters envelop undersea mud volcanoes and hydrothermal vents, hosting unusual life forms in a landscape both alien and awe-inspiring. The seafloor is a tapestry of volcanic sites and unique coral reefs, set against a backdrop of submerged lands that are five times longer than the Grand Canyon.
Family programs
- Scavenger Hunts
- Workshops & Hands-on Activities
- Virtual Junior Activities
Travel Tips
Plan Ahead
Plan for a remote, inaccessible destination; no on-site visits. Research virtually, especially during the dry season. No events or amenities available.
Pack Appropriately
Pack layers for variable ocean temperatures, waterproof gear, and sturdy footwear. Bring a first aid kit, water purification tablets, and a multi-tool. For longer stays, include a tent, sleeping bag, and bear-resistant containers if necessary. Check the season for rain and sun protection.
Respect Wildlife
Maintain a 100-yard distance from marine mammals, use binoculars for viewing, and avoid touching or feeding wildlife to preserve this pristine ecosystem. Respect local guidelines and seasonal sensitivities to protect the unique flora and fauna.
Stay Informed
Exercise caution on trails and near ledges, especially during storms or extreme weather. Stay informed about conditions, fire restrictions, and park rules. For emergencies, call 911 or park authorities at 684-633-7083. Be mindful of water and terrain hazards.
Seasons
In spring, from March to May, experience warm temperatures (86-88°F) and vibrant marine life. Enjoy mild humidity and occasional showers. No specific events, but ideal for spotting seabirds and sea turtles. Recommended for its stable weather conditions.
Explore the deepest ocean canyon in summer, with temperatures ranging from 70-85°F. Though hot and humid, this season offers rare glimpses of undersea mud volcanoes. No specific summer events, but unique biodiversity and hydrothermal vents make it a must-visit for adventure seekers.
In the fall, from September to November, with temperatures ranging from 70 to 85°F, the area experiences mild weather, but it is not recommended for visits due to its remote and inaccessible nature. No special events occur here during this season.
Winter months bring mild temperatures, 70-80°F, and calm seas, ideal for spotting blue whales and diverse marine life, despite potential occasional storms. A unique time to explore this deep-sea wonder.
Frequently Asked Questions
Ready to dive into what Marianas Trench Marine National Monument has to offer? Let’s tackle some of the burning questions you might have as you plan your visit!
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The closest city to the Marianas Trench Marine National Monument is Saipan, which is located in the Northern Mariana Islands. Saipan is the largest island in the Northern Mariana Islands and is about 200 miles from the trench.
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Pets are not permitted inside the monument due to its remote and inaccessible location. The area is protected for its unique marine life and habitats, and no on-site visits are allowed.
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You cannot park an RV, camper, motorhome, or any other type of vehicle at the Mariana Trench Marine National Monument because it is primarily submerged lands and deep waters, and there are no facilities for parking or camping.
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The most iconic sight is the Challenger Deep, the deepest part of the ocean, located at a depth of about 36,000 feet in the Mariana Trench, which is about 7,000 feet deeper than Mount Everest is tall. This area is part of the Trench Unit within the monument. It was protected as part of the monument established by President George W. Bush in January 2009.