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Short Citation:
NMFS Office Of Protected Resources, 2024: Ringed Seal (Arctic Subspecies),

Item Identification

Title: Ringed Seal (Arctic Subspecies)

Critical habitat for the Arctic subspecies of the ringed seal includes marine waters within one specific area in the Bering, Chukchi, and Beaufort seas, extending from the nearshore boundary, defined by the 3-m isobath relative to mean lower low water (MLLW), to an offshore limit within the U.S. Exclusive Economic Zone (EEZ). The boundary extends offshore from the northern limit of the United States-Canada border approximately 90 km to 70°26'19'' N/140°11'21'' W, and from this point runs generally westward along the line connecting the following points: 70°55'35'' N/142°33'51'' W, 70°53'25'' N/144°37'19'' W, 71°1'22'' N/146°36'55'' W, 71°17'21'' N/148°34'58'' W, and 71°20'8'' N/150° W. From this point (71°20'8'' N/150° W) the boundary follows longitude 150° W northward to 72°20'4'' N/150°W, then extends westward to 72°20'4'' N/153° W, then follows longitude 153° W northward to the seaward limit of the U.S. EEZ, and then follows the limit of the U.S. EEZ northwestward; then southwestward and south to the intersection of the southern boundary of the critical habitat in the Bering Sea at 61°18'15'' N/177°45'56'' W. The southern boundary extends southeastward from this intersection point to 60°7' N/172°1' W, then northeastward along a line extending to near Cape Romanzof at 61°48'42'' N/166°6'5'' W, with the nearshore boundary defined by the 3-m isobath. Critical habitat does not include permanent manmade structures such as boat ramps, docks, and pilings that were in existence within the legal boundaries as of the effective date of the final rule.Please see the final rule for additional information.


These data depict critical habitat designated for the Arctic subspecies of the ringed seal (87 FR 19232; 04/01/2022).


Theme Keywords

Thesaurus Keyword
ISO 19115 Topic Category
ISO 19115 Topic Category
None Arctic ringed seal
None critical habitat

Spatial Keywords

Thesaurus Keyword
None Beaufort Sea
None Bering Sea
None Chukchi Sea

Physical Location

City: Anchorage
State/Province: AK

Data Set Information

Data Set Scope Code: Data Set
Maintenance Frequency: As Needed
Data Presentation Form: Map (digital)
Data Set Credit: National Marine Fisheries Service, Alaska Region

Support Roles

Data Steward

CC ID: 1166880
Date Effective From: 2022-03-26
Date Effective To:
Contact (Person): Olson, Tammy
Email Address:

Metadata Contact

CC ID: 1166882
Date Effective From: 2022-03-26
Date Effective To:
Contact (Person): Olson, Tammy
Email Address:

Point of Contact

CC ID: 1166881
Date Effective From: 2022-03-26
Date Effective To:
Contact (Person): Olson, Tammy
Email Address:


Currentness Reference: Publication Date

Extent Group 1

Extent Group 1 / Geographic Area 1

CC ID: 1166884
W° Bound: -177.765559
E° Bound: -140.189211
N° Bound: 74.70884
S° Bound: 60.116665

Spatial Information

Reference Systems

Reference System 1

CC ID: 1166877

Coordinate Reference System

CRS Type: Geographic 2D
EPSG Code: EPSG:4326
EPSG Name: WGS 84
See Full Coordinate Reference System Information

Access Information

Security Class: Unclassified
Data Use Constraints:

The user assumes the entire risk related to its use of these data. NMFS is providing these data "as is," and NMFS disclaims any and all warranties, whether express or implied, including (without limitation) any implied warranties of merchantability or fitness for a particular purpose. No warranty expressed or implied is made regarding the accuracy or utility of the data on any other system or for general or scientific purposes, nor shall the act of distribution constitute any such warranty. It is strongly recommended that careful attention be paid to the contents of the metadata file associated with these data to evaluate dataset limitations, restrictions or intended use. In no event will NMFS be liable to you or to any third party for any direct, indirect, incidental, consequential, special or exemplary damages or lost profit resulting from any use or misuse of these data.

Technical Environment


Microsoft Windows 10 Version 10.0 (Build 19042) ; Esri ArcGIS



Alaska Coastline

CC ID: 1166873
Source Contribution:

Alaska Coastline (1:63,360 scale). Alaska Department of Natural Resources;

Alaska Regional Digital Elevation Model Version

CC ID: 1166871
Source Contribution:

Alaska Regional Digital Elevation Model Version 2.0, a bathymetric digital elevation model with nominal 1-km grid spacing. University of Alaska Fairbanks,

Bathymetry (Alaska and Surrounding Waters)

CC ID: 1166872
Source Contribution:

Bathymetry (Alaska and Surrounding Waters), a bathymetric raster dataset having 20 m x 20 m cell resolution. National marine Fisheries Service, Alaska Regional Office,

Continually Update Shoreline Product (CUSP)

CC ID: 1166875
Source Contribution:

Continually Update Shoreline Product (CUSP), national shoreline product (1:1,000 – 1:24,000 scale). National Oceanic and Atmospheric Administration (NOAA),

Maritime Limits and Boundaries of United States of America

CC ID: 1166874
Source Contribution:

Maritime Limits and Boundaries of United States of America. NOAA Office of Coast Survey,

Child Items

Rubric scores updated every 15m

Rubric Score Type Title
Entity SealRinged_ArcticSubspecies_20220401

Catalog Details

Catalog Item ID: 66954
GUID: gov.noaa.nmfs.inport:66954
Metadata Record Created By: Jonathan Molineaux
Metadata Record Created: 2022-04-05 18:17+0000
Metadata Record Last Modified By: SysAdmin InPortAdmin
Metadata Record Last Modified: 2022-08-09 17:11+0000
Metadata Record Published: 2022-04-05
Owner Org: OPR
Metadata Publication Status: Published Externally
Do Not Publish?: N
Metadata Last Review Date: 2022-04-05
Metadata Review Frequency: 1 Year
Metadata Next Review Date: 2023-04-05