• Scientists count about 50 hotspots on the Earth.
  • Hotspots lie directly above a column of hot rock called a mantle plume.
  • Mantle plumes continuously bring hot rock up from the mantle toward the crust.
  • The islands of Hawaii formed over a hotspot in the middle of the Pacific plate.
  • Loihi seamount is currently active beneath the water southeast of the Big Island of Hawaii.
  • One day, the volcano will rise above sea level and join the volcanoes of the island or create a new island.
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