| English | Spanish |
| Agreement for Cooperation in Dealing with Pollution of the North Sea by Oil and Other Harmful Substances | Acuerdo sobre cooperación en la lucha contra la contaminación del mar del Norte producida por los hidrocarburos y otras sustancias peligrosas |
| Agreement for Cooperation in Dealing with Pollution of the North Sea by Oil and Other Harmful Substances | Acuerdo de Bonn |
| Agreement on Cooperation in Research, Conservation and Management of Marine Mammals in the North Atlantic | Acuerdo de Cooperación en la Investigación, Conservación y Gestión de los Mamíferos Marinos del Atlántico Norte |
| Agreement on Cooperation in Research, Conservation and Management of Marine Mammals in the North Atlantic | Acuerdo NAMMCO |
| Community action to protect the environment in the coastal areas and coastal waters of the Irish Sea, North Sea, Baltic Sea and North-East Atlantic Ocean | programa comunitario de protección del medio ambiente en las zonas y aguas costeras del mar de Irlanda, del mar del Norte, del mar Báltico y de la parte noreste del océano Atlántico |
| Conference on the North Sea | Conferencia del Mar del Norte |
| Convention for the Protection of the Marine Environment of the North-East Atlantic | Convenio sobre la protección del medio ambiente marino del Atlántico nororiental |
| Convention for the Protection of the Marine Environment of the North-East Atlantic | Convenio para la Protección del Medio Ambiente Marino del Atlántico del Nordeste |
| Convention for the Protection of the Marine Environment of the North-East Atlantic | Convenio sobre la protección del medio marino del Nordeste Atlántico |
| Cooperation Agreement for the protection of the coasts and waters of the north-east Atlantic against pollution | Acuerdo de cooperación para la protección de las costas y las aguas del Atlántico Nororiental contra la contaminación |
| Cooperation Agreement for the protection of the coasts and waters of the north-east Atlantic against pollution | Acuerdo de cooperación para la protección de las costas y de las aguas del Atlántico del Nordeste contra la contaminación |
| International Conference on the Protection of the North Sea | conferencia internacional para la protección del Mar del Norte |
| International Conference on the Protection of the North Sea | Conferencia Internacional sobre la protección del Mar del Norte |
| International Conference on the Protection of the North Sea | Conferencia internacional sobre la protección del mar del Norte |
| International Convention on the North-West Atlantic Fisheries | Convenio internacional sobre pesquerías del Atlántico Noroeste |
| North Africa A geographic region of the African continent south of Europe and the Mediterranean Sea, and north of Africa's tropical rain forest, including Morocco, Algeria, Tunisia, Libya and the Egyptian region west of the Suez Canal, and also the Sahara Desert and Atlas Mountains | Africa del Norte |
| North African Ostrich | avestruz (Struthio camelus) |
| North America | América del Norte UP: Norteamérica |
| North America | América del Norte (UP: Norteamérica) |
| North American Agreement on Environmental Cooperation | Acuerdo de Cooperación Ambiental de América del Norte |
| North American Commission for Environmental Cooperation | Comisión para la Cooperación Ambiental |
| North American manatee | lamatín de América del Norte (Trichechus manatus) |
| North Atlantic Marine Mammal Commission | Comisión de Mamíferos Marinos del Atlántico Septentrional |
| North Atlantic Ocean | Océano Atlántico Norte |
| North Atlantic Ocean The northern part of the Atlantic Ocean, extending northward from the equator to the Arctic Ocean | Océano Atlántico Norte |
| North Atlantic Salmon Conservation Organisation | Organización para la Conservación del Salmón del Norte del Atlántico |
| North Pacific Fur Seal Commission | Comisión sobre las Focas de Piel del Pacífico Septentrional |
| North Pacific Fur Seal Commission | Comisión sobre las Focas para Peletería del Pacífico Septentrional |
| North Pacific Ocean | Océano Pacífico Norte |
| North Pacific Ocean An ocean north of the equator between the eastern coast of Asia and the western coasts of the Americas, extending northward to the arctic region, with principal arms including the Gulf of Alaska, the Sea of Okhotsk, the Sea of Japan and the Bering, Yellow, East China, South China and Philippine seas, and islands including the Aleutian, Midway, Marshall and Hawaiian islands, the Japanese island arc and the Malay Archipelago | Océano Pacífico Norte |
| North Sea Conference | Conferencia Internacional sobre la protección del Mar del Norte |
| North Sea Conference | Conferencia del Mar del Norte |
| North-South relationship | Relaciones Norte-Sur |
| North-South relationship The connections, associations or involvement of developed nations, found predominantly in the Northern Hemisphere, with developing nations, found predominantly in the Southern Hemisphere | Relaciones Norte-Sur |
| research project on the eutrophication of the southern North Sea | proyecto Phaeocystis |
| research project on the eutrophication of the southern North Sea | proyecto de investigación sobre la eutrofización de la zona sur del Mar del Norte |
| Specific action to protect the environment in coastal areas and coastal waters of the Irish Sea, North Sea, Baltic Sea and North-East Atlantic Ocean | conjunto de medidas para proteger el medio ambiente de las zonas y aguas costeras del mar de Irlanda, del mar del Norte, del mar Báltico y de la parte noreste del océano Atlántico |
| Specific action to protect the environment in the coastal areas and coastal waters of the Irish Sea, North Sea, Baltic Sea and North-East Atlantic Ocean Nor th S ea special programme of action | Conjunto de medidas para proteger el medio ambiente de las zonas y aguas costeras del mar de Irlanda,del mar del Norte,del mar Báltico y de la parte noreste del Océano Atlántico |
