Rose Atoll is the most important seabird colony in the region, providing protected habitat for a large portion of the seabird populations of American Samoa.
Coral communities at Rose include about 140 species, after surveys through 2007, and are distinctive and quite different from those of the other islands in Samoa.
To date, about 270 species of fish have been recorded and surveys have indicated little change in the reef fish community in the past 15 years.
The two islands at Rose Atoll are important nesting sites for the threatened green turtle in American Samoa.
Hermit crabs (Coenobita perlatus and C. brevimanus) traverse the sand at night toget to the water’s edge for hydration. They are important scavengers of the terrestrial community.
The two islands provide important nesting and roosting habitat for 12 species of federally protected migratory seabirds including terns, noddies, boobies, frigatebirds, and tropicbirds.
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Vibrant hues include electric blue, gold, and dark teal, faisua are rare in the rest of the region but thrive at the refuge.