Sirena Deep
Deep area in Mariana Trench / From Wikipedia, the free encyclopedia
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The Sirena Deep, originally named the HMRG Deep, was discovered in 1997[1][2] by a team of scientists from Hawaii.[2] Its directly measured depth of 10,714 m (35,151 ft) is third only to the Challenger Deep and Horizon Deep, currently the deepest known directly measured places in the ocean.[3][4][5] It lies along the Mariana Trench, 200 kilometers to the east of the Challenger Deep and 145 km south of Guam.[1][2]