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Images: Worlds Apart, But United by the Oceans

Jian Lin, a geophysicist at Woods Hole Oceanographic Institution, retrieved a sediment core from the seafloor off Sumatra, the site of the underwater earthquake that generated the 2004 Indian Ocean tsunami. (Photo by Tom Kleindinst, Woods Hole Oceanographic Institution)

A record of past tsunamis may be preserved in seafloor sediments in layers of fine-grained particles that are stirred up by tsunami-generating seafloor earthquakes and later resettle on the seafloor. (Photo by Tom Kleindinst, Woods Hole Oceanographic Institution)

Lin will analyze the seafloor sediment cores he retrived from the seafloor off Sumatra to see if it can reveal a history of earthquakes and tsunamis in the region. (Photo by Tom Kleindinst, Woods Hole Oceanographic Institution)

The first modern Chinese around-the-world scientific expedition was conducted in 2005-06 on research ship Dayang 1. (Photo by Huisheng Lu, captain of Dayang 1)