Loihi Seamount: The Next Volcanic Island in the Hawaiian Chain
A submarine volcano is rising off the southeast coast of Hawaii
Republished from Eruptions of Hawaiian volcanoes: USGS General Information Product 117
A New Island in the Hawaiian Chain?
If the hot-spot theory is correct, the next volcano in the Hawaiian chain should form east or south of the Island of Hawai'i. Abundant evidence indicates that such a new volcano exists at Lö'ihi, a seamount (or submarine peak) located about 20 miles off the south coast. Lö'ihi rises 10,100 feet above the ocean floor to within 3,100 feet of the water surface.
Recent detailed mapping shows Lö'ihi to be similar in form to Kïlauea and Mauna Loa. Its relatively flat summit apparently contains a caldera about 3 miles across; two distinct ridges radiating from the summit are probably rift zones.
https://geology.com/usgs/loihi-seamount/
