| Seamounts | Individual Seamounts | Undersea volcanic mountains with high biodiversity | Davidson Seamount (Pacific Ocean, off California, USA) |
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| Bowie Seamount (Pacific Ocean, off Canada) |
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| Kamaʻehuakanaloa Seamount (Pacific Ocean, off Hawaii, USA) |
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| Great Meteor Seamount (Atlantic Ocean, Northeast Atlantic) |
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| Gorringe Ridge (Atlantic Ocean, off Portugal) |
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| Axial Seamount (Pacific Ocean, Juan de Fuca Ridge) |
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| Panikkar Seamount (Indian Ocean) |
| Seamount Chains | Major Chains | Chains of submarine volcanic mountains | Hawaiian–Emperor Seamount Chain (Pacific Ocean, Hawaii to Aleutian Trench) |
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| New England Seamounts (Atlantic Ocean, USA East Coast to Mid-Atlantic Ridge) |
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| Louisville Ridge (Pacific Ocean, Southern Pacific) |
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| Indian Ocean Seamounts – Ashoka, Chandragupt, Kalpataru (Indian Ocean) |
| Mid-Oceanic Ridges | Divergent Ridges | Formed due to plate divergence and seafloor spreading | Mid-Atlantic Ridge (Atlantic Ocean, Arctic to Southern Ocean) |
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| East Pacific Rise (Pacific Ocean, Eastern Pacific) |
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| Southwest Indian Ridge (Indian Ocean, Africa–Antarctica) |
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| Gakkel Ridge (Arctic Ocean) |
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| Juan de Fuca Ridge (Pacific Ocean, off USA–Canada) |
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| Carlsberg Ridge (Indian Ocean, Arabian Sea) |
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| Chile Rise (Pacific Ocean, Nazca–Antarctic boundary) |
| Submarine Canyons | Deep Seabed Valleys | Transport sediments and nutrients to deep ocean | Zhemchug Canyon (Bering Sea, Pacific Ocean) |
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| Monterey Canyon (Pacific Ocean, off California, USA) |
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| Hudson Canyon (Atlantic Ocean, off New York–New Jersey, USA) |
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| Great Bahama Canyon (Atlantic Ocean, Bahamas) |
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| Congo Canyon (Atlantic Ocean, off Congo River, Africa) |
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| Perth Canyon (Indian Ocean, off Western Australia) |
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| Nazaré Canyon (Atlantic Ocean, Portugal) |
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| Bering Canyon (Bering Sea, Pacific Ocean) |
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| Swatch of No Ground (Bay of Bengal, Indian Ocean) |
| Guyots | Flat-topped Seamounts | Formed by erosion and subsidence | Kuko Guyot (Pacific Ocean, Emperor Chain) |
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| Suiko Guyot (Pacific Ocean, Hawaiian–Emperor Chain) |
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| Pallada Guyot (Pacific Ocean) |
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| Resolution Guyot (Pacific Ocean, Mid-Pacific Mountains) |
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| Great Meteor Tablemount (Atlantic Ocean, Northeast Atlantic) |
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| DN Wadia Guyot (Indian Ocean) |
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| Ioah Guyot (Pacific Ocean) |
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| Nintoku Seamount (Pacific Ocean, Hawaiian–Emperor Chain) |
| Coral Landforms | Atolls (Global) | Ring-shaped coral reefs surrounding lagoons | Kwajalein Atoll (Pacific Ocean, Marshall Islands) |
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| Great Chagos Bank (Indian Ocean, Chagos Archipelago) |
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| Aldabra Atoll (Indian Ocean, Seychelles) |
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| Huvadhu Atoll (Indian Ocean, Maldives) |
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| Rangiroa (Pacific Ocean, Tuamotu Archipelago, French Polynesia) |
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| Bikini Atoll (Pacific Ocean, Marshall Islands) |
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| Aitutaki Atoll (Pacific Ocean, Cook Islands) |
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| Tubbataha Reef (Pacific Ocean, Philippines) |
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| Kiritimati (Pacific Ocean, Kiribati) |
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| Lighthouse Reef (Caribbean Sea, Belize) |
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| North Malé Atoll (Indian Ocean, Maldives) |
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| South Ari Atoll (Indian Ocean, Maldives) |
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| Baa Atoll (Indian Ocean, Maldives) |
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| Minicoy / Maliku (Indian Ocean, Lakshadweep, India) |
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| Agatti (Indian Ocean, Lakshadweep, India) |
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| Bangaram (Indian Ocean, Lakshadweep, India) |