Rykachev Guyot

It is a flat-topped undersea mountain, or guyot, in the North Pacific Ocean. Its name is listed in the GEBCO Gazetteer, the international reference for undersea feature names.

GEBCO stands for the General Bathymetric Chart of the Oceans, a joint project under the International Hydrographic Organization and UNESCO's Intergovernmental Oceanographic Commission. Its gazetteer is the authoritative index of standardized undersea feature names worldwide.

The name most likely honors a 19th-century Russian scientist of the Rykachev family, commonly associated with Mikhail Rykachev, who directed Russia's Main Geophysical Observatory in St. Petersburg. Soviet oceanographers named many North Pacific seamounts after prominent figures in Russian science and exploration.

No, it is a submerged seamount lying thousands of meters below the ocean surface, so it is accessible only to research vessels with sonar mapping, deep-towed cameras, or submersibles. Its existence and shape are known primarily through bathymetric surveys rather than direct observation.