See also:

• Regional: Oceania: Science and Environment  (6)

• Challenger Deep - Challenger Deep got its name from the British survey ship Challenger II, which pinpointed the deep water off the Marianas Islands in 1951. Also called the Marianas Trench.
• The Mariana Trench - Explore the deepest part of the Pacific Ocean and the deepest location on Earth.
• UN System-Wide Earthwatch: Northern Mariana Islands - Environmental information and statistics, including details for individual islands in the group.