: a submarine mountain rising above the deep-sea floor
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Over millions of years, metals in the surrounding seawater form coatings of iron and manganese oxides, with thicknesses ranging from a few millimeters to a few decimeters, depending on the age of the seamounts.—Leonardo MacElloni, The Conversation, 10 Mar. 2026 These cobalt crusts are found on seamount slopes, which contain vital metals such as cobalt, nickel, and platinum.—Mrigakshi Dixit, Interesting Engineering, 7 Nov. 2025 The seamount is 250 miles north of Palau — an island country east of the Philippines — and multibeam sonar revealed its peak is hidden about 800 feet below the surface.—Mark Price, Sacbee.com, 11 Sep. 2025 Or book a berth aboard the eight-passenger Water and Wind catamaran to sites that include Princess Alice Bank, where huge schools of jack, tuna, and barracuda cloud the seamount.—Terry Ward, AFAR Media, 11 Sep. 2025 See All Example Sentences for seamount