Arabian Sea Oxygen Minimum Zone - Ocean Biodiversity Information System

Arabian Sea Oxygen Minimum Zone

Statistics

Occurrence records	165,671
Species level	80,829
Species	4,970
Taxa	5,931
Datasets	155
Time range	1743 - 2023

Data quality

Dropped records

Dropped records	0
Not marine	86
No WoRMS match	5,222
No coordinates	0
Zero coordinates	0

Taxonomic issues

Marine unsure	1,332
No accepted name available	7,199

Missing and invalid fields

Field	Missing	Invalid
coordinateUncertaintyInMeters	164,858	2,797
eventDate	19,605	0
maximumDepthInMeters	71,666	330
minimumDepthInMeters	37,396	333
occurrenceStatus	21,665	0
scientificName	63	0
scientificNameID	4,752	1,463

Spatial issues

Records on land	28
More than 20 km from shore	0
Depth exceeds bathymetric depth	486

Top datasets

Dataset	Records
World Ocean Database 2009 Published 2020-11-17	88,028
PANGAEA - Data from Tübingen University Published 2025-03-20	12,096
Taxonomically comprehensive assessment of biodiversity of animal plankton throughout the world ocean Published	11,276
PANGAEA - Data from the Deep Sea Drilling Project (DSDP) Published 2025-03-20	5,614
PANGAEA - Data from the Ocean Drilling Program (ODP) Published 2025-03-20	4,075
PANGAEA - Data from Biogeochemical fluxes of matter and energy in the deep sea (BIGSET) Published 2025-03-20	3,729
PANGAEA - data from Archive of Ocean Data (ArcOD) Published 2025-03-20	3,428
PANGAEA - Data from various sources Published 2025-03-20	3,376
IndOBIS, Indian Ocean Node of OBIS Published	3,037
MICROBIS Database (version 1) - European data Published	2,109

Distribution

Disclaimer: EEZ boundaries based on Marine Regions (no endorsement).

Records

Composition

detailed (class) simple

Top taxa

Unique species IUCN Red List All taxa Unique species IUCN Red List All taxa Unique species IUCN Red List All taxa

Scientific name	Records
Copepoda Milne Edwards, 1840 Phylum Arthropoda > Class Copepoda	6,560
Fiona Alder & Hancock, 1853 Phylum Mollusca > Class Gastropoda	5,010
Oncaea Philippi, 1843 Phylum Arthropoda > Class Copepoda	4,025
Sagitta Quoy & Gaimard, 1827 Phylum Chaetognatha > Class Sagittoidea	3,997
Biota	3,260
Animalia	3,201
Ostracoda Latreille, 1802 Phylum Arthropoda > Class Ostracoda	2,921
Oikopleura Mertens, 1830 Phylum Chordata > Class Appendicularia	2,767
Bacteria	2,433
Polychaeta Grube, 1850 Phylum Annelida > Class Polychaeta	2,273

Newest species

Scientific name	Records	Since
Pseudoceros indicus Newman & Schupp, 2002 Phylum Platyhelminthes	2	2020
Sipunculus (Sipunculus) norvegicus Danielssen, 1869 Phylum Annelida	2	2019
Ophiomoeris obstricta (Lyman, 1878) Phylum Echinodermata > Class Ophiuroidea	2	2019
Ophiocoma cynthiae Benavides-Serrato & O'Hara, 2008 Phylum Echinodermata > Class Ophiuroidea	2	2019
Parilia alcocki Wood-Mason in Wood-Mason & Alcock, 1891 Phylum Arthropoda > Class Malacostraca	2	2019
Pseudobiceros damawan Newman & Cannon, 1994 Phylum Platyhelminthes	3	2019
Pseudoceros galatheensis Dixit, Raghunathan & Chandra, 2017 Phylum Platyhelminthes	6	2019
Ophiomastix elegans (Peters, 1851) Phylum Echinodermata > Class Ophiuroidea	2	2019
Bulaceros newcannorum Dixit, 2021 Phylum Platyhelminthes	3	2019
Pseudoceros galaxea Dixit, 2021 Phylum Platyhelminthes	3	2019

Data providers

Name	Records
National Oceanic and Atmospheric Administration, Washington	88,028
U.S. Geological Survey HQ	88,028
Vlaams Instituut voor de Zee	39,508
Intergovernmental Oceanographic Commission of UNESCO	17,279
Woods Hole Oceanographic Institution	13,385
Eberhard Karls University of Tübingen	12,096
Centre for Marine Living Resources & Ecology, Ministry of Earth Sciences, Government of India	10,949
Christian-Albrechts-University Kiel Leibniz Institute of Marine Sciences	3,729
CSIR - National Institute of Oceanography, Goa	3,207
National Chemical Laboratory; Information Division	3,037