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Cruise EX-15-04 Leg 3—2015 Hohonu Moana: Exploring the Deep Waters off Hawaiʻi (ROV/Mapping)
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2020
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Series: EX-15-04
[PDF-3.61 MB]
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Description:EX-15-04-L3 was a combined remotely operated vehicle (ROV) and mapping expedition in the Main Hawaiian Islands (MHI), including the Geologist Seamounts located 100 miles south of Honolulu, HI. This expedition was funded entirely by NOAA’s Deep-sea Coral, Research, and Technology Program (DSCRTP) and therefore prioritized DSCRTP interests, deviating somewhat from NOAA Office of Ocean Exploration and Research’s (OER) typical community-driven exploration mode with NOAA Ship Okeanos Explorer (EX). The expedition took place between August 28 and September 3, 2015, during which six remotely operated vehicle (ROV) dives were conducted. Three of these took place off the islands of Oʻahu and the Big Island, and focused on the commercially valuable precious corals fishery in Hawaiʻi. Three other dives were conducted off McCall, Swordfish, and Ellis Seamounts in the Geologists Seamounts group; two previously unknown high-density coral and sponge communities were discovered and explored during this expedition. There were 189 types of animals recorded during this expedition, including 17 that are potential new species or records for the region. A number of these were collected for further analysis, along with 11 rock samples to provide more information about the origin and age of the seamounts, lava flows, and geological features investigated during this expedition. Mapping operations acquired data over 6,400 square kilometers of seafloor, including crucial backscatter data on McCall and Ellis Seamounts.
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Rights Information:Public Domain
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