Penguin Banks Acoustic Bottomfish Survey (SE0703L2, EK60). Narrow-band, split-beam acoustic data were collected using a Simrad EK60 system operating at 38 and 120 kHz frequencies along predetermined transects to collect reverberation data from organisms in the watercolumn to be processed for echoes of economically important bottomfish.

Penguin Banks Acoustic Bottomfish Survey (SE0902L2, EK60). Narrow-band, split-beam acoustic data were collected using a Simrad EK60 system operating at 38, 70, and 120 kHz frequencies along predetermined transects to collect reverberation data from organisms in the watercolumn to be processed for echoes of economically important bottomfish.

TZCF Oceanographic Survey (SE1102L2, EK60). Data were collected along the 158°W and 161°W Meridionals from 22°30′N-36°00′N and from 31°15′N-35°15′N. CTD cats were conducted at predetermined stations. CTDs were equipped with oxygen sensors and fluorometers, and chlorophyll and nutrients were measured at discrete depths. Biological backscatter and currents were monitored using the EK60 echosounder system (38, 70, and 120 kHz) and an RD Instruments ADCP along the transects.

Comparison of fishery-independent methods for sampling Main Hawaiian Islands Bottomfish assemblages (SE1102L1, EK60). Optical, active acoustics, and research fishing data on bottomfish abundance and biomass were collected over predetermined grids to compare results of methodologies. Optical data were collected using a baited stationary Botcam. Acoustics data were collected using a narrow-beam EK60 system operating at 38, 70, and 120 kHz frequencies. Research fishing was conducted using hook-and-line on small boats. Botcam drops with simultaneous acoustic recordings were conducted to obtain target strength measurements of fish with known species and sizes. Bottomfishing off the Sette were conducted simultaneously with acoustics data collection to further groundtruth the acoustics data.

TZCF Oceanographic Survey (SE0902L1, EK60). Oceanographic data were collected along the 158°W Meridional from 22°30′N-36°00′N. CTD cats were conducted at predetermined stations. CTDs were equipped with oxygen sensors and fluorometers, and chlorophyll and nutrients were measured at discrete depths. Biological backscatter and currents were monitored using the EK60 echosounder system (38, 70, and 120 kHz) and an RD Instruments ADCP along the transect. Samples of micronektonic organisms were collected from the shallow and deep sound scattering layers at predetermined locations.

Comparison of fishery-independent methods for sampling Main Hawaiian Islands Bottomfish assemblages (SE1302, EK60). Optical, active acoustics, and research fishing data on bottomfish abundance and biomass were collected over predetermined grids to compare results of methodologies. Optical data were collected using a baited stationary Botcam, a SeaBED AUV, and a BlueView imaging sonar. Acoustics data were collected using a narrow-beam EK60 system operating at 38, 70, 120, and 200 kHz frequencies. Research fishing was conducted using hook-and-line on small boats. Simultaneous AUV and ROV with active acoustics were operated to obtain target strength measurements of fish with known species and sizes. Bottomfishing off the Sette were conducted simultaneously with acoustics data collection to further groundtruth the acoustics data.

Cetacean Ecology Survey at North Western Hawaiian Islands (SE1303, EK60). The goal of the cruise was to collect data on the abundance, distribution, stock structure, and habitat of cetaceans in the Papahānaumokuākea Marine National Monument (PMNM) using 7 integrated operations. These operations included visual observations, passive acoustic monitoring, photo-identification, biopsy sampling, satellite tagging, small boat surveys, and oceanography (CTD, Chlorophyll, XBT, and surface samples). A High-frequency Acoustic Recording Package (HARP) was recovered during the cruise.

Kona Integrated Ecosystem Assessment Survey (SE1304, EK60). This cruise accomplished the following objectives: Oceanographic data were collected from a total of 21 CTD casts and continuous TSG measurements along a predefined grid off the west coast of Hawaii to assess the influence of physical dynamics on the region's biological productivity. CTD-mounted fluorometer measurements were carried out by two fluorometers. Chlorophyll was measured for ten discrete samples per CTD using a bench top Turner 10-AU fluorometer. Water samples were preserved for post-cruise flow cytometry to determine phytoplankton size structure. Biological backscatter was monitored using the EK60 echosounder system, both during trawl operations and along 71 acoustic transects at 38, 70, and 120 kHz frequencies. Twenty two nighttime oblique mid-water trawls were conducted targeting the shallow sound scattering layer. Visual surveys for a total of 70 hours were conducted to collect data on cetaceans. A Seaglider was successfully deployed to collect temperature, salinity, and fluorometry data.

Mesophotic coral environment monitoring and habitat surveys at the Main Hawaiian Island Chain (SE1006, EK60). The goals of the cruise were to collect a variety of data to assess the status of mesophotic corals in waters between the islands of Maui, Kahoolawe, Lanai, and Molokai. Camera surveys of corals and fish were conducted by a live feed video camera attached to a Towed Optical Assessment Device (TOAD). Three mooring, consisting of temperature and current meters, were recovered. Three pairs of Tidbit temperature loggers were deployed. CTD casts were conducted and light profiles taken at predetermined stations at midday. Mixed-gas dive operations were conducted to assess coral communities and the presence of fish, aided with cameras. Sand and gravel samples were taken for amphipod analysis. Biological backscatter were recorded using an EK60 echosounder system operating at 38, 70, and 120 kHz along predetermined transects.

Oceanographic Survey in waters of the Northern Mariana Islands, Guam, and Micronesia (SE1003, EK60). The goals of the cruise were to collect acoustic backscatter and oceanographic data at the vicinity of CNMI, Guam, and in the northern part of Micronesia. Data collected consisted of CTD casts, trawl samples, and continuous monitoring of currents and biological acoustic backscatter. CTD cats were conducted at predetermined stations. CTDs were equipped with oxygen sensors and fluorometers, and water was sampled at discrete depths during each cast for nutrients and chloropigment determinations. Trawl operations were conducted at predetermined stations using an Isaacs Kidd midwater trawl at depths of the shallow sound scattering layer. Currents were continuously monitored using an RD Instruments Acoustic Doppler Current Profiler (ADCP) operating at 75 kHz frequency. Biological backscatter was recorded using an EK60 echosounder system along predetermined transects, operating at 38, 70, and 120 kHz frequencies.