![]() ![]() These data will provide optical observations that will be correlated with bathymetry and acoustic backscatter imagery Data were collected at the Northwestern Hawaiian Islands,įrench Frigate Shoals to support Benthic Habitat Mapping efforts. To create a fish biomass map of French Frigate Shoals. Refer to supplemental information for description ofįrench Frigate Shoals is a large open atoll located at 23.75N, 166.2W. The underlying basalt structure is estimated to be 13.8 million years old. ![]() Tern Island is the largest island at FFS and was enlarged by the U.S. Navy just prior to World War II numerous other small islets exist. Mobile fauna data were collected using the Tethered Optical Assessment Device (TOAD), a sled equipped with km but the large reef and adjacent banks include 733 sq. These data are used to provide fish count and biomass maps where benthic habitat classification has been completed. Camera sled deployments were conducted at night and during the day. The camera sled was deployed off the starboard J-frame on NOAA ship Hi'ialakai. The TOAD was lowered slowly to the bottom by a winch holding 360 m of cable and operated from a control station in the dry lab of the ship. The TOAD operator monitored a live video feed from the camera and record data on a video tape recorder.Įquipment Description - The TOAD sled body used for the data collection is constructed from a shortened Phantom ROV body with a tail piece added for stability. ![]()
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