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National Coral Reef Monitoring Program: Towed-diver surveys of benthic habitats, key benthic species, and marine debris of the Mariana Archipelago

Published by NOAA National Centers for Environmental Information | National Oceanic and Atmospheric Administration, Department of Commerce | Metadata Last Checked: October 04, 2025 | Last Modified: 2018-03-07T00:00:00.000+00:00
The visual estimate data provided in this collection were gathered during towed-diver surveys around the Mariana Archipelago. During towed-diver surveys, the diver records the percentage cover of total live hard corals, stressed hard corals, soft corals, sand, coralline algae, 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. Surveys were conducted in the Mariana Archipelago as part of the ongoing NOAA National Coral Reef Monitoring Program (NCRMP).

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0157550 0166629 biological data CORAL CORAL - CENSUS CORAL - COLONY SIZE CORAL - SPECIES IDENTIFICATION DEBRIS DEPTH - SENSOR HABITAT - BENTHIC MACROINVERTEBRATE CENSUS REEF AND/OR BOTTOM REGIME - PERCENT COVER WATER TEMPERATURE GPS swimmer/diver visual observation biological in situ survey - biological survey - coral reef survey - swimmer/diver tows visual estimate visual observation NOAA Ship Hi'ialakai Coral Reef Ecosystems Program Coral Reef Ecosystems Program Coral Reef Conservation Program (CRCP) CORAL REEF STUDIES National Coral Reef Monitoring Program (NCRMP) Pacific Reef and Assessment Monitoring Program (Pacific RAMP) North Pacific Ocean Philippine Sea oceanography CRED CREP Coral Reef Ecosystem Division Coral Reef Ecosystem Program PIFSC Pacific Islands Fisheries Science Center DOC/NOAA/NMFS > National Marine Fisheries Service, NOAA, U.S. Department of Commerce 743 National Coral Reef Monitoring Program (NCRMP) 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 > 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 EARTH SCIENCE > BIOLOGICAL CLASSIFICATION EARTH SCIENCE > BIOLOGICAL CLASSIFICATION > ANIMALS/INVERTEBRATES EARTH SCIENCE > BIOSPHERE > ECOSYSTEMS > MARINE ECOSYSTEMS > BENTHIC EARTH SCIENCE > BIOSPHERE > ECOSYSTEMS > MARINE ECOSYSTEMS > REEF > CORAL REEF EARTH SCIENCE > OCEANS > COASTAL PROCESSES > CORAL REEFS EARTH SCIENCE > OCEANS > OCEAN TEMPERATURE > WATER TEMPERATURE EARTH SCIENCE > SOLID EARTH > GEOMORPHIC LANDFORMS/PROCESSES > COASTAL LANDFORMS > CORAL REEFS TDS Towed-diver surveys towboard towed diver GPS RECEIVERS > GPS RECEIVERS VISUAL OBSERVATIONS > VISUAL OBSERVATIONS Ships Hi'ialakai (call sign: WTEY, ICES code: 33HL, 2004-) COUNTRY/TERRITORY > Northern Mariana Islands > Agrihan Island > Agrihan Island (18N145E0002) COUNTRY/TERRITORY > Northern Mariana Islands > Aguihan > Aguihan Island (Aguijan) (14N145E0006) COUNTRY/TERRITORY > Northern Mariana Islands > Alamagan Island > Alamagan Island (17N145E0002) COUNTRY/TERRITORY > Northern Mariana Islands > Asuncion Island > Asuncion Island (19N145E0001) COUNTRY/TERRITORY > Northern Mariana Islands > Farallon de Pajaros > Farallon de Pajaros (20N144E0001) COUNTRY/TERRITORY > Northern Mariana Islands > Guguan > Guguan Island (17N145E0001) COUNTRY/TERRITORY > Northern Mariana Islands > Maug > Maug Island (20N145E0001) COUNTRY/TERRITORY > Northern Mariana Islands > Northern Mariana Islands > Northern Mariana Islands ( CNMI ) (18N146E0000) COUNTRY/TERRITORY > Northern Mariana Islands > Pagan > Pagan Island (18N145E0001) COUNTRY/TERRITORY > Northern Mariana Islands > Rota > Rota Island ( Luta ) (14N145E0007) COUNTRY/TERRITORY > Northern Mariana Islands > Saipan > Saipan Island (15N145E0002) COUNTRY/TERRITORY > Northern Mariana Islands > Sarigan Island > Sarigan Island (16N145E0003) COUNTRY/TERRITORY > Northern Mariana Islands > Tinian > Tinian Island (14N145E0005) COUNTRY/TERRITORY > United States of America > Guam > Guam (13N144E0000) OCEAN BASIN > Pacific Ocean > Western Pacific Ocean > Agrihan Island > Agrihan Island (18N145E0002) OCEAN BASIN > Pacific Ocean > Western Pacific Ocean > Aguihan Island Reefs > Aguihan Island (Aguijan) (14N145E0006) OCEAN BASIN > Pacific Ocean > Western Pacific Ocean > Alamagan Island > Alamagan Island (17N145E0002) OCEAN BASIN > Pacific Ocean > Western Pacific Ocean > Asuncion Island > Asuncion Island (19N145E0001) OCEAN BASIN > Pacific Ocean > Western Pacific Ocean > Farallon de Pajaros > Farallon de Pajaros (20N144E0001) OCEAN BASIN > Pacific Ocean > Western Pacific Ocean > Guam > Guam (13N144E0000) OCEAN BASIN > Pacific Ocean > Western Pacific Ocean > Guguan Island > Guguan Island (17N145E0001) OCEAN BASIN > Pacific Ocean > Western Pacific Ocean > Mariana Archipelago > Northern Mariana Islands ( CNMI ) (18N146E0000) OCEAN BASIN > Pacific Ocean > Western Pacific Ocean > Maug Island > Maug Island (20N145E0001) OCEAN BASIN > Pacific Ocean > Western Pacific Ocean > Pagan Island > Pagan Island (18N145E0001) OCEAN BASIN > Pacific Ocean > Western Pacific Ocean > Rota Island > Rota Island ( Luta ) (14N145E0007) OCEAN BASIN > Pacific Ocean > Western Pacific Ocean > Saipan Island > Saipan Island (15N145E0002) OCEAN BASIN > Pacific Ocean > Western Pacific Ocean > Sarigan Island > Sarigan Island (16N145E0003) OCEAN BASIN > Pacific Ocean > Western Pacific Ocean > Tinian Island Reefs > Tinian Island (14N145E0005) OCEAN > PACIFIC OCEAN > NORTH PACIFIC OCEAN CNMI Commonwealth of the Northern Mariana Islands Mariana Islands Marianas Triennial 0CRUP8 PUGK08

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