Wikipedia:Today's featured article/January 15, 2019

Wōdejebato is an undersea volcanic mountain with a flat top (a guyot), and probably a shield volcano, in the northern Marshall Islands of the Pacific. Formed of basaltic rocks, it is connected through a 74 km submarine ridge to the smaller Bikini Atoll to its southeast. Named for a sea god of Bikini, Wōdejebato rises 4420 m above the ocean floor, to within 1335 m of the surface. It was probably formed by a hotspot in present-day French Polynesia before being shifted by plate tectonics. A volcanic episode in the Late Cretaceous led to the formation of an island and a carbonate platform that disappeared below the sea. A second volcanic episode between 85 and 78.4 million years ago created an island that was eventually eroded, generating an atoll or atoll-like structure that covered the former island with carbonates. The second carbonate platform drowned about 68 million years ago.