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National Coral Reef Monitoring Program: Towed-diver Surveys of Benthic Habitat, Key Benthic Species, and Marine Debris Sightings of the Hawaiian Archipelago in 2016

Published by Pacific Islands Fisheries Science Center | National Oceanic and Atmospheric Administration, Department of Commerce | Metadata Last Checked: December 19, 2025 | Last Modified: 2016-01-01T00:00:00.000+00:00
The towed-diver method is used to conduct benthic surveys, assessing large-scale disturbances (e.g., bleaching) and quantifying benthic components such as habitat complexity/type and the general distribution and abundance patterns of live coral, crustose coralline algae (CCA), macroalgae, and macroinvertebrates. Surveys are conducted in the Hawaiian and Mariana Archipelagos, American Samoa, and the Pacific Remote Island Areas as part of the NOAA National Coral Reef Monitoring Program (NCRMP). A suitable method for assessing relatively large areas of reef habitat, the method involves towing a pair of SCUBA divers—one benthic and one fish—behind a small boat for approximately 50 min following the ~15-m depth contour and covering about 2–3 km of habitat. Each diver is equipped with a towboard and attempts to maintain a constant elevation above the surface of the reef (~1 m) for the duration of the survey. A complete towed-diver survey is divided into 10, 5-min segments, with visual observations recorded by 5-min segment. The visual estimate data provided in this dataset were collected during towed-diver surveys which includes percentage cover of total live hard corals, stressed hard corals, soft corals, sand, coralline algae, and macroalgae, and the number of individual macroinvertebrates (crown of thorns starfish (COTS), sea urchins, and giant clams). Benthic habitat complexity and type data are also collected as part of the survey with the following habitat type categories: continuous reef, spur and groove, patch reefs, rock boulders, pavement, rubble flat, sand flats, pinnacle, and wall. The data were collected around the Hawaiian Archipelago as part of the NOAA Pacific Islands Fisheries Science Center (PIFSC), Coral Reef Ecosystem Program (CREP) led mission in 2016. These data can be accessed online via the NOAA National Centers for Environmental Information (NCEI) Ocean Archive.

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743 National Coral Reef Monitoring Program Numeric Data Sets > Biology EARTH SCIENCE > Biosphere > Aquatic Habitat > Reef Habitat EARTH SCIENCE > Biosphere > Zoology > Corals EARTH SCIENCE > Biosphere > Zoology > Corals > Coral Mortality EARTH SCIENCE > Biosphere > Zoology > Corals > Photic Zone Corals EARTH SCIENCE > Biosphere > Zoology > Corals > Reef Monitoring and Assessment EARTH SCIENCE > Oceans > Coastal Processes > Coral Reefs EARTH SCIENCE > Oceans > Coastal Processes > Coral Reefs > Coral Reef Ecology > Benthic biology EARTH SCIENCE > Oceans > Coastal Processes > Coral Reefs > Coral Reef Ecology > Coral Cover EARTH SCIENCE > Oceans > Coastal Processes > Coral Reefs > Coral Reef Ecology > Habitats EARTH SCIENCE > Oceans > Coastal Processes > Coral Reefs > Coral Reef Ecology > Hard Coral Cover EARTH SCIENCE > Oceans > Coastal Processes > Coral Reefs > Coral Reef Ecology > Hard Coral Cover Dead percentage EARTH SCIENCE > Oceans > Coastal Processes > Coral Reefs > Coral Reef Ecology > Hard Coral Cover Live percentage EARTH SCIENCE > Oceans > Marine Biology > Coral EARTH SCIENCE > Oceans > Marine Biology > Coral Communities EARTH SCIENCE > Oceans > Marine Biology > Macroinvertebrates EARTH SCIENCE > Oceans > Marine Biology > Marine Invertebrates EARTH SCIENCE > Oceans > Marine Biology > Marine Invertebrates > Census EARTH SCIENCE > Oceans > Marine Biology > Marine Invertebrates > Census > Macroinvertebrates EARTH SCIENCE > Oceans > Marine Biology > Marine Invertebrates > Census > Population Density EARTH SCIENCE > Oceans > Marine Biology > Marine Invertebrates > Macroinvertebrates CORAL DEBRIS DEPTH - SENSOR HABITAT - BENTHIC MACROINVERTEBRATE CENSUS REEF AND/OR BOTTOM REGIME - PERCENT COVER TEMPERATURE survey survey - biological survey - coral reef survey - swimmer/diver tows visual estimate HI'IALAKAI CORAL REEF STUDIES Coral Reef Conservation Program National Coral Reef Monitoring Program US DOC; NOAA; NMFS; Pacific Islands Fisheries Science Center; Ecosystem Sciences Division; Coral Reef Ecosystem Program COUNTRY/TERRITORY > United States of America > Hawaii > Hawaii > Hawaii (21N160W0000) COUNTRY/TERRITORY > United States of America > Hawaii > Hawaii > Hawaii Island (19N155W0003) COUNTRY/TERRITORY > United States of America > Hawaii > Hawaii > Kauai Island (22N159W0001) COUNTRY/TERRITORY > United States of America > Hawaii > Hawaii > Molokai Island (21N157W0001) COUNTRY/TERRITORY > United States of America > Hawaii > Honolulu > French Frigate Shoals (24N166W0001) COUNTRY/TERRITORY > United States of America > Hawaii > Honolulu > Kure Atoll (28N178W0001) COUNTRY/TERRITORY > United States of America > Hawaii > Honolulu > Lisianski Island (25N173W0001) COUNTRY/TERRITORY > United States of America > Hawaii > Honolulu > Pearl and Hermes Reef (27N176W0001) COUNTRY/TERRITORY > United States of America > Hawaii > Kauai > Niihau Island (21N160W0001) COUNTRY/TERRITORY > United States of America > Hawaii > Maui > Lanai Island (20N156W0002) COUNTRY/TERRITORY > United States of America > Hawaii > Maui > Maui Island (20N156W0004) COUNTRY/TERRITORY > United States of America > Hawaiian Islands (21N157W0027) OCEAN BASIN > Pacific Ocean > Central Pacific Ocean > Hawaiian Islands (21N157W0027) OCEAN BASIN > Pacific Ocean > Central Pacific Ocean > Hawaiian Islands > Hawaii > Hawaii (21N160W0000) OCEAN BASIN > Pacific Ocean > Central Pacific Ocean > Hawaiian Islands > Hawaii Island > Hawaii Island (19N155W0003) OCEAN BASIN > Pacific Ocean > Central Pacific Ocean > Hawaiian Islands > Kauai Island > Kauai Island (22N159W0001) OCEAN BASIN > Pacific Ocean > Central Pacific Ocean > Hawaiian Islands > Lanai Island > Lanai Island (20N156W0002) OCEAN BASIN > Pacific Ocean > Central Pacific Ocean > Hawaiian Islands > Maui Island > Maui Island (20N156W0004) OCEAN BASIN > Pacific Ocean > Central Pacific Ocean > Hawaiian Islands > Molokai Island > Molokai Island (21N157W0001) OCEAN BASIN > Pacific Ocean > Central Pacific Ocean > Hawaiian Islands > Niihau Island > Niihau Island (21N160W0001) OCEAN BASIN > Pacific Ocean > Central Pacific Ocean > Northwestern Hawaiian Islands > French Frigate Shoals (24N166W0001) OCEAN BASIN > Pacific Ocean > Central Pacific Ocean > Northwestern Hawaiian Islands > Kure Atoll (28N178W0001) OCEAN BASIN > Pacific Ocean > Central Pacific Ocean > Northwestern Hawaiian Islands > Lisianski Island (25N173W0001) OCEAN BASIN > Pacific Ocean > Central Pacific Ocean > Northwestern Hawaiian Islands > Pearl and Hermes Reef (27N176W0001) North Pacific Ocean Papahanaumokuakea Marine National Monument CRED CREP Coral Reef Ecosystem Division Coral Reef Ecosystem Program PIFSC Pacific Islands Fisheries Science Center TDS Towed-diver surveys towboard towed diver Triennial MHI Main Hawaiian Islands NWHI Northwestern Hawaiian Islands DOC/NOAA/NMFS/PIFSC > Pacific Islands Fisheries Science Center, National Marine Fisheries Service, NOAA, U.S. Department of Commerce Hawaiian Archipelago

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