"American Samoa is rich in coral reefs and all islands are more or less fringed by coral reefs. Although structurally not part of the Samoan chain, political American Samoa includes Rose Atoll, a true atoll, and Swains Island. The coral reefs of American ...

"The Hawaii hot spot lies in the mantle under, or just to the south of, the Big Island of Hawaii. Two active subaerial volcanoes and one active submarine volcano reveal its productivity. Centrally located on the Pacific Plate, the hot spot is the source o...