Bathymetric map

18°40′N 157°40′W / 18.667°N 157.667°W / 18.667; -157.667 Geologists Seamounts (alternatively named South West Hawaii Group^[1]) are seamounts in the Pacific Ocean, 100 miles (160 km) south of Honolulu, Hawaii^[2] and 100–200 kilometres (62–124 mi)^[3] southwest from Big Island.^[4] Clockwise from north they are named Perret, Jaggar, McCall, Pensacola, Daly, Swordfish, Cross, Washington and Ellis.^[5] The seamounts developed during the Cretaceous,^[6] about 80 million years ago, and there is no geological relationship to the neighbouring Hawaiian Islands^[3] although there may be one to the Musicians Seamounts.^[7] Rocks dredged from the seamounts include iron-manganese crusts, carbonates and basalts. Corals and sponges have been recorded.^[8]

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