Lōʿihi

Lōʻihi is a submarine volcano and seamount located in the Pacific Ocean, southeast of the island of Hawaii. It is the youngest volcano in the Hawaiian chain and is still growing, with its summit caldera about 1 km below sea level. While its eruptions have not been directly observed, seismic activity and the discovery of a new collapse crater indicate volcanic processes are occurring. Lōʻihi is an example of a submarine volcano, which are volcanic mountains rising from the seafloor. These features are common in ocean basins, with thousands reported in the Pacific Ocean alone.12