National Marine Sanctuary of American Samoa is a living laboratory teeming with diverse marine ecosystems, from vibrant coral reefs to deep-sea habitats yet to be fully explored. "As one of the most extensive and biologically rich national marine sanctuaries in the United States, this area is home to an astonishing array of marine life—including one of the world’s oldest and largest known corals, Big Momma, and the most active Samoan underwater volcano, Vailulu’u!
Scientists and researchers continue to study the sanctuary’s biodiversity, resilience, and cultural connections to the ocean, ensuring that this marine treasure is safeguarded for future generations. Click the links below to learn more about ongoing research, progress through partnerships, and the scientific initiatives shaping the future of marine resource management in American Samoa.
Learn about the sanctuary’s unique environments ranging from the shallow coral reefs to the deep sea.
Discover the ocean’s gentle giants that provide a habitat and home for numerous fish and invertebrates.
Dive into the deep with mapping and exploration expeditions in the sanctuary over the years.
Explore the sanctuary’s research programs that support science and conservation efforts.
