Subregions- Aguascalientes, Mexico
 - Aguascalientes urban area, Aguascalientes, Mexico
- Akron urban area, Ohio
- Alabama
- Albuquerque urban area, New Mexico
- Anticosti Island, Quebec, Canada
- Arkansas
- Bahama Islands
- Barnegat Bay, New Jersey
- Bass Islands, Ohio
- Bay of Campeche
- Birmingham urban area, Alabama
- central Texas
- Chesapeake Bay region
- Chihuahua, Mexico
- Chihuahua urban area, Chihuahua, Mexico
- Cincinnati urban area, Kentucky
- Cincinnati urban area, Ohio
- Ciudad Juarez urban area, Chihuahua, Mexico
- Cleveland urban area, Ohio
- Coahuila, Mexico
- Colorado
- Colorado Springs urban area, Colorado
- Columbus urban area, Ohio
- Culiacan urban area, Sinaloa, Mexico
- Dauphin Island, Alabama
- Davis Strait
- Dayton urban area, Ohio
- Delaware
- Delaware Bay, Delaware
- Delaware Bay, New Jersey
- Delaware River, Delaware
- Denver urban area, Colorado
- Distrito Federal, Mexico
- Durango, Mexico
- eastern Kentucky
- eastern Montana
- eastern Quebec, Canada
- eastern Tennessee
- eastern Texas
- El Paso urban area, New Mexico
- Estado de Mexico, Mexico
- Florida-Georgia border region
- Florida Peninsula
- Gaspe Peninsula, Quebec, Canada
- Georgia, USA
- Great Bay, New Jersey
- Great Egg Harbor Bay, New Jersey
- Greater New York area, New Jersey
- Greater Philadelphia area, New Jersey
- Greater Philadelphia area, Pennsylvania
- Guadalajara urban area, Jalisco, Mexico
- Guanajuato, Mexico
- Gulf of Maine
- Gulf of Mexico
- Gulf of St. Lawrence
- Harrisburg urban area, Pennsylvania
- Hidalgo, Mexico
- Hudson Bay
- Hudson Bay Islands, Nunavut, Canada
- Hudson Strait region, Canada
- Illinois
- Indiana
- Indian River Bay, Delaware
- Iowa
- Isla del Carmen, Campeche, Mexico
- Jalisco, Mexico
- James Bay, Nunavut, Canada
- Kansas
- Kelleys Island, Ohio
- Labrador, Newfoundland and Labrador, Canada
- Labrador Sea
- Laguna de Terminos, Campeche, Mexico
- Lake Erie, Ohio
- Lake Erie, Pennsylvania
- Lake Michigan, Illinois
- Lake Michigan, Indiana
- Lehigh Valley urban area, New Jersey
- Lehigh Valley urban area, Pennsylvania
- Leon urban area, Guanajuato, Mexico
- Little Egg Harbor, New Jersy
- Long Beach Island, New Jersey
- Louisiana
- Louisiana-Texas border region
- Lower Bay, New Jersey
- Maine
- Manitoba, Canada
- Maryland
- Massachusetts
- Michigan
- Minnesota
- Mississippi
- Mississippi Sound, Alabama
- Missouri
- Mobile Bay, Alabama
- Monterrey urban area, Nuevo Leon, Mexico
- Nayarit, Mexico
- near the coast of Massachusetts
- Nebraska
- New Brunswick, Canada
- Newfoundland, Newfoundland and Labrador, Canada
- New Hampshire
- New Jersey
- New Mexico
- New York
- New York-Massachusetts border region
- North Carolina
- North Dakota
- northern Quebec, Canada
- northern Texas
- Nova Scotia, Canada
- Nuevo Leon, Mexico
- offshore Campeche, Mexico
- offshore Delaware
- offshore Maryland
- offshore New Hampshire
- offshore New Jersey
- offshore Tabasco, Mexico
- offshore Tamaulipas, Mexico
- offshore Veracruz, Mexico
- off the east coast of the United States
- Ohio
- Oklahoma
- Oklahoma City urban area, Oklahoma
- Ontario, Canada
- Ontario-Quebec border region, Canada
- Pennsylvania
- Perdido Bay, Alabama
- Pittsburgh urban area, Pennsylvania
- Potomac-Shenandoah region
- Prince Edward Island, Canada
- Puebla, Mexico
- Puebla urban area, Puebla, Mexico
- Quebec-New Brunswick border region, Canada
- Queretaro, Mexico
- Queretaro urban area, Queretaro, Mexico
- Raritan Bay, New Jersey
- Rehoboth Bay, Delaware
- Saguenay Valley region, Quebec, Canada
- Saltillo urban area, Coahuila, Mexico
- Sandy Hook Bay, New Jersey
- San Luis Potosi, Mexico
- San Luis Potosi urban area, San Luis Potosi, Mexico
- Saskatchewan, Canada
- Scranton-Wilkes-Barre urban area, Pennsylvania
- Sinaloa, Mexico
- South Carolina
- South Dakota
- southern New England
- southern Ontario, Canada
- southern Quebec, Canada
- southern Texas
- St. Lawrence Valley region, Quebec, Canada
- Tamaulipas, Mexico
- Tennessee
- Texas-Mexico border region
- Texas Panhandle region
- Tlaxcala, Mexico
- Toledo urban area, Ohio
- Torreon urban area, Coahuila, Mexico
- Torreon urban area, Durango, Mexico
- Trenton urban area, New Jersey
- Tulsa urban area, Oklahoma
- Turks and Caicos Islands region
- Ungava Bay, Canada
- Ungava Peninsula, Quebec, Canada
- Utah
- Veracruz, Mexico
- Vermont
- Vermont - New Hampshire region
- Virginia
- Virginia-North Carolina border region
- Wasatch Front Urban Corridor, Utah
- western Florida
- western Kentucky
- western Montana
- western Texas
- West Virginia
- Wilmington urban area, Delaware
- Wisconsin
- Wyoming
- Yellowstone National Park, Idaho
- Yellowstone National Park, Montana
- Yellowstone National Park, Wyoming
- Youngstown-Akron urban area, Ohio
- Zacatecas, Mexico
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