Best Guyot
Atlantis Seamount is an underwater mountain located near the Mid-Atlantic Ridge in the North Atlantic Ocean. As a flat-topped guyot, it was formed by volcanic activity and later eroded to its current shape. The seamount is scientifically significant because it hosts the Lost City hydrothermal field,...
Why this score?
Highly prominent Atlantic feature, though the description conflates it with Atlantis Massif, the actual Lost City hydrothermal-field host.
Scoring methodology
Magellan Guyot is a massive, flat-topped submarine mountain, known as a tablemount or guyot, located on the Pacific Ocean floor. Like other guyots, its distinct level summit was formed by wave and coral reef erosion when the structure was once at or near sea level. Over millions of years, geological...
Why this score?
Massive scale, extensive summit, and coral-reef erosion history make it an especially informative and recognizable Pacific tablemount.
Scoring methodology
The Great Meteor Tablemount is a large, flat-topped volcanic structure located in the northeast Atlantic Ocean. It’s notable as one of the largest guyot formations—a type of extinct submarine volcano—and was identified by German scientists during research into Cretaceous-era geological features. Thi...
Bear Seamount is an extinct submarine volcano and the oldest and westernmost member of the New England Seamount chain in the North Atlantic Ocean. It formed approximately 100 million years ago, likely as the North American Plate moved over a mantle plume. Erosion has since reduced it to a flat-toppe...
Why this score?
Oldest New England Seamount and key endpoint of a major volcanic chain; substantial geological and ecological research reputation.
Scoring methodology
The Great Meteor Guyot is a Miocene-era guyot, a tablemount volcanic formation found in the northeast Atlantic Ocean, specifically within the Canary region. It represents one of the largest seamounts in the Atlantic and has been extensively studied by oceanographers due to its unique geological feat...
The Detroit Guyot is a Cretaceous-era guyot—a flat-topped volcanic island—found within the Pacific Ocean’s Emperor Seamount chain. Specifically located near Hawaii, it represents an emperor seamount formed approximately 76 million years ago during the Late Cretaceous period. Geologists study this st...
Meiji Guyot is the oldest known seamount in the Emperor-Hawaiian volcanic chain, formed approximately 82 million years ago as the Pacific plate moved over a stationary hotspot.
Seattle Guyot is a flat-topped submarine volcano in the Pacific Ocean and part of the Mid-Pacific Mountains. Like other guyots, its level summit records a history in which volcanic land stood near or above sea level before later subsidence carried it beneath the ocean. Its Cretaceous geology makes i...
Why this score?
Large, prominent flat-topped volcano with substantial scientific value and stronger recognition than most named Pacific guyots; public visibility remains limited.
Scoring methodology
Kelvin Seamount is an underwater volcanic mountain, or guyot, located in the North Atlantic Ocean as part of the New England Seamount chain. It features a flat, table-like summit formed by wave erosion before the seamount subsided below the sea surface. The seamount is ecologically significant, prov...
Why this score?
Substantial deep-water coral populations and New England chain context give it strong ecological and geological research standing.
Scoring methodology
The Corner Rise Seamounts are a cluster of submarine volcanic mountains located in the North Atlantic Ocean. Formed by tectonic plate movement over a hotspot, these seamounts feature flat summits, known as guyots, that were eroded by waves before subsiding below the ocean surface. The isolated geogr...
Why this score?
Major isolated Atlantic seamount chain with important coral habitats and geological value; recognized collectively rather than as one iconic feature.
Scoring methodology
Nashville Seamount is a significant submarine volcano within the New England Seamount chain in the North Atlantic Ocean. The seamount rises from the ocean floor and features a flat top characteristic of guyots, formed by wave erosion when the volcano was once above water before subsiding. It support...
Why this score?
Large New England chain volcano with documented deep-sea biodiversity; strong research value but less singular than Bear.
Scoring methodology
Suiko Guyot is a massive, flat-topped underwater volcano, or guyot, located in the northern Pacific Ocean as part of the Emperor seamount chain. It was formed by volcanic activity over the Hawaiian hotspot millions of years ago, dating back to the Cretaceous period. The seamount is scientifically si...
Hess Tablemount is a flat-topped submarine volcano in the Pacific Ocean, named after geologist Harry Hammond Hess, who first defined and classified guyots in 1946.
Osbourn Guyot is a large, flat-topped submarine volcano located in the South Pacific Ocean. It is a prominent geological feature and the oldest known seamount within the Louisville seamount chain, formed by volcanic activity from the Louisville hotspot. As a guyot, its summit was once an above-water...
Colahan Guyot, also listed as Colahan Seamount, is an underwater volcanic landform in the northern Pacific Ocean and part of the Hawaiian-Emperor seamount chain. It belongs to the chain's guyot-type or flat-topped seamounts, which are submerged volcanic edifices shaped by erosion and later subsidenc...
Why this score?
Large volcanic seamount combines geological interest with habitat value, earning solid scientific relevance despite limited broader recognition.
Scoring methodology
Limalok Guyot is a flat-topped, Cretaceous-era seamount located in the Pacific Ocean within the Marshall Islands. The underwater mountain is scientifically notable for its large, drowned Eocene coral reefs that cap its summit. These geological features, along with its volcanic foundations, were exte...
Koko Guyot is a large, flat-topped underwater volcano located in the northern Pacific Ocean within the Emperor seamount chain. It is notable for the recovery of 48-million-year-old volcanic rock samples during scientific deep-sea drilling projects. These geological findings have provided researchers...
Wodejebato Guyot is a flat-topped submarine volcanic mountain in the central Pacific Ocean, within the Marshall Islands region. It formed as a volcanic island and later supported carbonate platforms and reefs before subsiding below sea level, while erosion and marine deposition helped produce its le...
Pigafetta Guyot is a flat-topped Pacific seamount named after Antonio Pigafetta, the Italian chronicler who meticulously documented Ferdinand Magellan's historic 16th-century circumnavigation.
Fieberling Tablemount is a flat-topped submarine volcano in the Pacific Ocean, notable for its distinct geological formation and the complex ecosystems it hosts.
Thomas Washington Guyot is a Pacific Ocean seamount named after the renowned American oceanographer and Scripps Institution director.
A flat-topped submarine mountain located in the central Pacific Ocean, notable for its ancient Cretaceous volcanic origins and its role in the study of plate tectonics and marine geology.
Cobb Seamount is a prominent submarine volcano and guyot located in the Pacific Ocean off the coast of the northwestern United States. Formed during the Quaternary period, it features a remarkably shallow summit that approaches the ocean surface. This unique topography supports highly productive and...
Manning Seamount is an extinct submarine volcano in the New England Seamount Chain of the western North Atlantic. The chain contains more than 30 undersea volcanic peaks formed as the North American Plate moved over a long-lived hotspot, and it extends from the area near the eastern United States to...
Why this score?
Complex relief and chain membership support worthwhile geological study; less renowned and distinctive than leading New England seamounts.
Scoring methodology
Nintoku Seamount, also known as Nintoku Guyot, is a flat-topped submarine volcano in the Emperor Seamount chain of the North Pacific Ocean. Its eroded summit records a period when the volcano stood near sea level before subsidence carried it beneath the ocean. Geological and magnetic studies of Nint...
Alexander Agassiz Guyot is a Pacific submarine volcano named after the 19th-century American scientist, notable for its submerged coral reef cap and deep-water marine life.
Smoot Guyot is a flat-topped undersea mountain in the North Pacific Ocean, notable as a listed name in the GEBCO Gazetteer of Undersea Feature Names.
Revelle Guyot is a flat-topped submarine mountain located in the North Pacific Ocean and listed in the GEBCO Gazetteer of Undersea Feature Names. Guyots are seamounts whose summits were planed flat by wave action before subsiding below sea level. The name follows standard undersea feature nomenclatu...
Afanasy-Nikitin Seamount is a submarine volcanic mountain in the Indian Ocean, named after the fifteenth-century Russian traveler Afanasy Nikitin. It is classified as a guyot because its summit is relatively flat, a form produced when a volcanic island or seamount is eroded near sea level and later...
Discovery Guyot is a flat-topped submarine mountain recorded in the GEBCO Gazetteer of Undersea Feature Names. It lies in the South Atlantic at approximately 42 degrees south and 10 degrees east. A guyot is a seamount whose summit has been substantially flattened, commonly interpreted as the remnant...
